Merge branch 'stable' into dev

Change-Id: I2799f7a11d9fb86db03536f78b4ba1b673877207

Stabilize and speed up test

Added lots of missing qWaitForWindowExposed(), and
sped up animations.

Change-Id: Ie3c5e53dc9e9770baa05fb1da3eedce80ac52d31
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix crash in tst_qmltest with the new animators.

If the target of a job was deleted while it was running we need
to avoid any operations on that job.

Task-number: QTBUG-33723
Change-Id: Ia86856e7f32465f58e25c87f9c74c99b7cb0caea
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

qmlimportscanner: Fix braces.

Change-Id: I1361bc1f10b04d0001a1d02b45033ca2c82f8105
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>

qmlimportscanner: Use iostream for output consistently.

host-built tools should not use <QDebug>.

Change-Id: I2c69c79c138689d22f4979e268313fb461a8053a
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>

qmlimportcanner: Compile with QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_ASCII.

Clean up single character string constants and string usage.

Change-Id: I242110d57beeb100155757bda170ade479fcb242
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>

Mark qmltest as insignificant to get CI to pass again

The animator tests keep crashing randomly.

Change-Id: I0d4b177238fc915931c3503b03e29f433ebf4950
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Try to stabilize the multipleTransitions test

Change-Id: Ifeb53d6a1334623106428410aa2756935d7ba6e1
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix compilation of the auto test

Change-Id: I8c10463aa064a25c0170e6b7f294f48501b42319
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix a few more uses of Value

Change-Id: Ib34a348d6091cc5f0a624a3f80569a08c7c78989
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Remove some uses of Value

Change-Id: I63ac7485b92c96df8520f0d40b148d807e13eccb
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Optimize storeReturnValue for double arguments

Change-Id: Icfe2ad49f6e12322b4d33fefc3c6de21cc3b6141
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix API for Object::define*Property

use ValueRef instead of const Value &.

Change-Id: I3fd0ca829870db27f036825d713c53dc0600be07
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Less QV4::Value usage

Fix some usages in qv4engine, and fix return types
in methods in qqmlxmlhttprequest.

Change-Id: I3d6225ca01bf7ea77fcc424914c8392bb6c3a454
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix API for evalCall()

Change-Id: Ib80b18348e18eb93044a73358f0c4e266b988f63
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Remove Value::fromString()

replaced with call to the GC safe ExceutionEngine::newString()
method.

Change-Id: I7258296e75ca724ff42b94a0d147bc33a05f8f68
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix Value usage in ErrorObjects

Change-Id: Iaa14ad5a8d3f085843e49195f8f4bb7bb020b9b6
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Remove more direct QV4::Value usage

Remove Value::fromString(String *), and make
Encode safe against encoding raw Managed * pointers.

Change-Id: Ibca4668e1cbeaf85c78169d14386281659d33ef6
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Make Encode not inherit from Value

This allows Encoding of Returned<> pointers, and directly
assigning them to a Value.

Change-Id: I0f22b9921ca5712538f22029fa5449242649e01c
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Move Value::toInteger(double) and related to Primitive

Also clean up a few other direct uses of Value

Change-Id: Ie27d42c1b31b9e6d16d0a60071cb5e4e1c5b9e8b
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Make API of QV4::JsonObject GC clean

Change-Id: Ie7f2d63402c9486b30caf5866af8c747026c091d
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Move Value::fromBool, ... to a new Primitive class

This will simplify finding the remaining direct usages of
QV4::Value that need fixing.

Change-Id: I223099727436d5748027c84c53d9dfc4028e38ed
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Use SafeValue in more places

Change-Id: Ic15c1419c74f22bd7639ce8746ff11b15240b718
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Clean up QV4::ExecutionContext

Remove an unused variable, and don't copy runtimeStrings

Change-Id: I2197a7eb82ab3dbefea83cc917567390266f9673
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix CallContext to not hold arguments on the C stack anymore

Change-Id: I35f46cce4f243d4b8b2bac9244f8fc26836f413b
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Doc: Updated imports, \qmlmodule, and \inqmlmodule versions in src/qml.

-QDoc ignores the version in \inqmlmodule so its better to remove them
to avoid confusion.
-Qt QML import version is 2.2 for 5.2 release
-Qt Quick import version is 2.2 for 5.2 release

Task-number: QTBUG-32172
Change-Id: I15df270f1fb4df0476a9ddd854fb9ddf58e9fc7c
Reviewed-by: Martin Smith <martin.smith@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

Update after changes to QTestResult API in qtbase

Change-Id: I8a28418753a21c700a365dd369d7befa8ab14f76
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>

Allow animators to work properly with multiple windows

Change-Id: I5ba663ba0fa089ea786cf43cb4dfa40cbc955342
Reviewed-by: Alan Alpert (Personal) <416365416c@gmail.com>

QSGRenderLoop: don't dereference gl pointer if it has been deleted

Change-Id: Icd612b243cdfe1248d1b94964c53f5102f9558d2
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Support looping for "uncontrolled animations".

The render thread animations rely heavily on uncontrolled
animations, meaning animations with duration=-1. We support
this by adding a m_currentLoopStartTime and incrementally
counting the finish time of each uncontrolled animation.

Change-Id: I1f2ccea09aff4c51b1a7f98a2ddb58636af50557
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>

Skip two tests that don't work reliably with a conservative GC

Change-Id: I5619d533b6e48c88fda063bc7cdcc62d6838bcdf
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Convert more methods in QV8Engine

Change-Id: I5b059b41842b4a6d9541525b3955d2b64c0011c3
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Move more API over to use ValueRef

Change-Id: I372f1f3e3e78d45912a913f437e622e0acfc9646
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Make parts of qv8engine_p.h GC safe

Change-Id: Iaa15423cedc307a09b3cd7287272d93d7a604caf
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix QQmlV4Function API to be GC safe

Change-Id: Id4f79c22fc48ada1c8a9a858e1b7b3d1cf14d120
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix API of QQmlV4Handle

Change-Id: Iac4a3fefebd33a5990408598486231a5add8e639
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix Persistent/WeakValue API

Don't use unprotected Values in the API anymore.

Change-Id: I8851628227fca374de24701bc8ee0908b5ae3923
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Cleanups in qv4stringobject

Make the methods GC clean, and simplify some logic

Change-Id: I02df8cb571f27d640c6effc871ea7c24b23b8368
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix WinCE build.

Change-Id: Ie0536ad94f88efe1e54226ed7f1d9e1042ffcc19
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

qmlimportscanner: Print usage when no arguments are passed.

Change-Id: I2ba5e18fff635705b1f5e8e19c104ba078c8e3a1
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Import QtQml instead of QtQuick now that Locale is available there.

97feace2aaaf08075c17ea175a5ed0c12aa40a0d made it available.

Change-Id: I4a263a26c1db164f410c49fe0fca776aed53f7e8
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

Doc: Fix documentation of qmlProtectModule

Fix the function signature used in \fn command and
document the parameters.

Change-Id: Ieda9b2b402886b81691195dbad17663fd454f282
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

Avoid out-of-bounds read.

Change-Id: I28777806b13da1b0a9e1fecc2734de0614f2443c
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>

Initialize variable

Change-Id: I1f3cf8b922849fc482b3c1346eb476019f466a13
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Split off crashing test from qqmlecmascript.

Task-number: QTBUG-33658

Change-Id: I5a9f24d49ab894e3cde745cc0c1d44ef0880510f
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Convenience class for FBO rendering in Qt Quick

Change-Id: I5712bbfa0cde9f2fe5fddc35c4cc23597717065c
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Doc: Fixed and updated Qt Quick's \qmlmodule page

-incremented version to Qt Quick 2.2 (in \qmlmodule page)
-import changed to QtQuick 2.2
-\inqmlmodule no longer needs the version. QDoc will ignore the version
but it is better to remove it now to avoid confusion

Task-number: QTBUG-32172
Change-Id: I40b52e59667014720be40a35b3a8fb9836825e31
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Doc: Made \since commands in src/qml consistent.

-QDoc displays the Qt version in the HTML output.
-If there is only one argument to \since, QDoc assumes it is the Qt
 version.

"QtQuick 2.1" -> "Qt 5.1"
"QtQml 2.1" -> "Qt 5.1"
"QtQuick 1.1" -> "Qt 4.8"

Task-number: QTBUG-32172
Change-Id: I3c0da4dce8e44d717a6840bea250b4f0f9d78128
Reviewed-by: Martin Smith <martin.smith@digia.com>

Doc: Made Qt Quick items' \since consistent.

Qt 5.2:
-"\since QtQuick 2.2" -> "\since 5.2"

Qt 5.1:
-"\since QtQuick 2.1" -> "\since 5.1"
-"\since Qt 5.1" -> "\since 5.1"

Qt 5.0:
-"\since QtQuick 2.0" -> "\since 5.0"

Task-number: QTBUG-32172
Change-Id: I699b00b31373a434ddb8f4caccfef40c588bf8a4
Reviewed-by: Martin Smith <martin.smith@digia.com>

Doc: Made \since command in Dialog QML types consistent.

-QDoc only requires the version number for Qt versions

Task-number: QTBUG-32172
Change-Id: Ifa3a94fa66194807d58b079b4f451af90cc1d00a
Reviewed-by: Martin Smith <martin.smith@digia.com>

wince: Build fix, NtCurrentTeb() is not available in this platform.

This was copied from qtscript's:
src/3rdparty/javascriptcore/JavaScriptCore/runtime/Collector.cpp

Change-Id: Iaa5549e6915aa4aa4bf532fbe7c9117a0858ff02
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix Component.onCompleted emission and bindings for composite types

When instantiating the composite type with a sub QQmlObjectCreator,
make sure to link the componentAttached objects back into the parent
creator. Similarly we need to collect the bindings the sub-creator
created, as finalize() is only called on the top-level creator.

Fixes remaining failures in tst_qqmllanguage::onCompleted

Change-Id: If79b31ee94000aeec280284200df8ee97e57fd03
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix lookup scopes into the context object

Given

QtObject {
     property int value: 42
     property var o: QtObject {
         Component.onCompleted: print(value)
     }
}

Should print 42 - the lookup for "value" should fail in the
scope object (o) and succeed in the context object.

Fixes part of tst_qqmllanguage::onCompleted

Change-Id: If48d6a780aa0f3cb4a7757694f93359e57757973
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix component boundary detection

For a component boundary, the type in question has to be an actual
QQmlComponent. If it's a type that itself is derived from a component (type ==
0 && component != 0 in typereference), then it is not a boundary.

Fixes tst_qqmllanguage::componentCompositeType

Change-Id: I938abe94c2fa4c69788176235ac74d0c6e385c0c
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix bug in assigning to self-declared properties in child object literals

When createInstance() calls populateInstance, make sure that the QObject
used for bindings is the instance we just created, not the _qobject from
the caller side (which is completely wrong and unrelated).

Change-Id: I7dc44ffaa70799b2f37258aeacdb33d8a1cf8c48
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix assigning composite type object literals to object properties

When doing the assignability test, pick the property cache from our
property caches for the created sub object and only otherwise fall
back to the regular engine cache.

Change-Id: I07b9746335a9a169e1055a3f4dc7fd3f0ab0fdef
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix bindings on properties in grouped value type properties

... such as
    point.x: { someExpression }

This requires special handling to install the QQmlBinding not on the
value type itself (not possible) but on the point property itself.

Fixes tst_qqmllanguage::valueTypes

Change-Id: I8f95379e1872dff7cdcc0480c229a5e68f3cf575
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix setting the id property when also present in the type itself

Fixes tst_qqmllanguage::idProperty

Change-Id: I3051da6a55f29bfca58aa83647fe5d51fb2a67e0
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix warnings about includes.

QtQml: WARNING: qtdeclarative/src/qml/qml/qqmlabstracturlinterceptor.h
QtQml: WARNING: qtdeclarative/src/qml/qml/qqmlfileselector.h
includes qtqmlglobal.h when it should include QtQml/qtqmlglobal.h

Change-Id: I1cc4e3a201e0f3bec34c5e4bca8ec1578c8b0224
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

qml: handle all possible QtMsgType in switch because of -Werror

Perhaps this illustrates why having -Werror is more of an annoyance
than whatever it was supposed to help:
https://codereview.qt-project.org/#change,65253 cannot be merged
until the new enum value that it adds is handled _everywhere_ that
it can be.

Change-Id: I2bba730b471683487e38693c9ace2d09be4c874d
Reviewed-by: hjk <hjk121@nokiamail.com>

V4 SSA: cleanup: rename single letter variables.

Because "targetTemp" and "sourceTemp" is clearer than, say, t1 and t2.

Change-Id: I5195c75f1958a3bea3c370924685ff6ba9c9c515
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

V4 SSA: change life-time interval coverage calculation.

When iterating over the ranges in a life-time interval, stop when the
range starts after the position to check.

Change-Id: Ib64cbfc644820fdb4c0167b8db0b40dacfb5d076
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

V4: enable register allocator on linux and macos on x86_64.

Change-Id: I958cf90da5c44b0119c5666df6ed2e4820444841
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

V4 regalloc: fix intersection calculation.

The previous version was plain wrong: when the first interval had more
than one range, those ranges would never be checked for intersection.

This version iterates over all ranges in the first interval, and returns
the index of the first range in the second interval that overlaps with
that range. Iterating over the second interval is cut off when an
interval is found that starts after the current one end (the ranges of
both intervals are sorted).

Change-Id: I87c254a645164eb6639925c2e3b7fd7c1b1bfa0a
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

V4: fix move mapping

When resolving conflicting register use between basic blocks, only
insert the resolving moves into the successor when it has one incoming
edge. Because of the absence of critical edges, this implies that it is
also save to insert those moves into the predecessor block if there is
more than one incoming edge (the predecessor will only have one outgoing
edge).

Change-Id: I83c41b4ca86946d3aa09619f20ddab3e692136f2
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

V4 JIT: fixes after NaN boxing changes.

Change-Id: I22a1b46f488dc65513ed287dabe7d85469cc5173
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

V4: re-enable SSA transformation and optimization.

But keep the register allocator disabled for now.

Change-Id: I475835ec35ef31d76e084788a754c00b1f8fdda6
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

V4 JIT: generate code for unary not operator.

Change-Id: I00a47d261a76db0b938f8c9300be9afc06b42d02
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Bump qtdeclarative version to 5.3.0

Change-Id: I3eee67a18f24ac5b68e7cc9dc1ba256746dbbb9e
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>

Add qmlimportscanner.

qmlimportscanner scans for import statements in qml
files and returns a JSON-formatted list of imports.
This is done recursively in order to get all dependencies.

Usage: "qmlimportscanner path/to/app/qml/"
-importPath path/to/qtbase/qml

Change-Id: I0e99caaf4216058c52a4706f7fdbeaf1eba0bbc1
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Merge "Merge remote-tracking branch 'origin/stable' into dev" into refs/staging/dev

Make qv4objectproto GC clean

Fix the remaining usages of raw pointers into the GC heap.

Change-Id: I3654a6f74fe6b59e25ed65a79ff02c29cc2cdecc
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix grouped property access for non-value type properties

If we don't have a value type, read the grouped property as QObject
instance and populate that instead.

Fixes tst_qqmllanguage::deepProperty

Change-Id: I9a8d5f929a9c0ebb39461863f6a93b3f35274f97
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Fix cases where mark() would access uninitialized memory

Change-Id: I4e07e20d30ba57759a0ece1c298a02b098718b33
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Prevent objects from being collected while in their constructor

While objects are being constructed, we don't have a reference to them
on the JS stack yet. So the constructor needs to protect itself against
being collected by putting the this object onto the JS stack.

Added an environment switch MM_EXACT_GC to test exact garbage
collection.

Change-Id: Ie37665a954de800359c272ffbebbe1488e7a8ace
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Convert the last methods in qv4object_p.h

Change-Id: I4fda83a0832760c277e629d4e658da718c0bf92b
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Fix some more methods to take ValueRef's

Change-Id: Ia0e30ba98c16e51c9992027c7e5f78d4def8697a
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Fix some smaller spec incompliances in Array.concat

Change-Id: I4a2252ef590c0d48ba734f96c7478637e1ddfd07
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Make sure ScopedArrayObject works as intended

We need a proper cast method for the class.

Change-Id: I8f2e4b3201d70e8fc90148f1780fd377057947bb
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Change the runtime API over to using StringRef's instead of String*

Change-Id: I0ea95e6cca995dc5f98871f0369204af18e48111
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

remove debug output

Change-Id: I168f24ac12715fc65abe230b2bd0f86f777eea00
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Convert Object::inplaceBinOp to be GC safe

Change-Id: I98a8591f4b556cc1d00271e6b389dc0d2c16e6ec
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Convert the remaining vtable methods to be GC safe

Change-Id: I679d1833609c41d71e8436ec0ba8a4624f0c4dd0
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Convert putIndexed()

Change-Id: I7d02b0fdf45079d0f7afcfb6d3158dd60cb09f33
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

convert Managed::put() API to be GC safe

Change-Id: I09198ce372fa545372db389fac26828d21ad5731
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Use a StringRef for Managed::get()

also store "toString" and "valueOf" as identifiers
in the engine and fix two places where we compared
strings the wrong way.

Change-Id: I70612221e72d43ed0e3c496e4209681bf254cded
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Use StringRef for most methods in Object

Change-Id: I8e2dad0e9e34c5a549952bc0765cd57f6aa8aadf
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Cleanup Object::define*Property API

Change-Id: I99125908a9bc1d41a2642c409af9704def7a0832
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Add a Safe<T> class and start using it

The class denotes objects that are stored safely
in areas controlled by the GC. These we can convert
fast to a StringRef etc.

Change-Id: I6b154eccaefddc42d4fafca55b7ee9e77179830c
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Start using StringRef for parameter passing

Change-Id: If2c41daeda2862cd1162c5da8163a9d62fe4111d
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Introduce a Referenced<T> class to pass Objects into methods

Added some convenience typedefs (StringRef, ObjectRef, ReturnedString,
ScopedString, ...)
Used StringRef in newBuiltinFunction() for testing.
Cleaned up the duplicated code for thrower functions.

Change-Id: I7b7676690cbe70d9eabb0a5afd0d922f0be3aefd
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Cleanup ExecutionEngine::newBuiltinFunction() usages

And change the return type to be GC safe

Change-Id: I6d7513962370fea4072a3d8c6b2c6f2d1705992e
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Don't use Value::emptyValue() anymore.

emptyValue is special and reserved for usage inside the
engine to mark missing values. The main to use cases
are when converting property descriptors, and to mark
holes in array data.

Change-Id: I0ed357e65102b1041bf9a878e6e9a4ae0657523b
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Further work towards an exact GC

Add some more convenience in the helper classes
in qscopedvalue_p.h
Make accesses to CallData safer, and change
ExecutionEngine::newObject() to return a safe
pointer.

Change-Id: I980909754ce9681cf6faa1355bab3a1e5d6dd186
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Animators - Render thread animation system

This introduces 6 new QML types for animating state in the
scene graph when the UI thread is blocked. The QObject property
being animated is updated after the animation completes.

It works also with the "windows" and "basic" render loops, but
offer litte benefit then compared to in the "threaded" case.

Change-Id: Ic19e47c898c0b8bd53e457db922b3c9c457c8147
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Merge remote-tracking branch 'origin/stable' into dev

Change-Id: I899f3b517523e4037de50802c0912f7dd960133e

Fix build logic for host_build tools.

Link against bootstrap-private instead QtCore when
cross-compiling.

Change-Id: I7aeb9d693b0dd041aea72b6b3dcb8614a9a92b89
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

Merge branch 'wip/v4' of qtdeclarative into dev

Pull in the remaining bits of the new compiler/vme branch.

Change-Id: I4706011c5eaf35f893d0733c4e130a31ce0ebb66

Docs: fix QtQuick2::Item::layer.sourceRect type

Change-Id: Ia02f451b07638ec2e3f0355b89bf9f7356da44a6
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Add Singleton support for QML

This introduces Singleton support for QML (Composite Singleton). For
now, the Singleton support is only availabe for QML types in modules
or (remote and local) directories with qmldir file. However, in the
future this support may be expanded to arbitrary QML file imports
without by leaving out the qmldir requirement.

You define a QML type as a Singleton with the following two steps:
1. By adding a pragma Singleton to a type's QML file:

pragma Singleton

The pragma and import statements can be mixed and their order does
not matter. Singleton is the only supported pragma for now. Others
will generate errors.

2. By specifying a qmldir file for the directory of your imported
type and prepending the type with "singleton" keyword as follows:

singleton TestTypeSingleton TestTypeSingleton.qml

Alternatively you may specify a qmldir file for a module and specify
your type as a singleton as follows:

singleton TestTypeSingleton 1.0 TestTypeSingleton.qml

Composite Singletons may be included in a module and may be used with
a local namespace qualifier when imported with:
"import xxx as NameSpace"

A singleton instance is created at first use and stored into the
QmlEngine (one instance per engine) and eventually released by the
engine's destructor.

CompositeSingletonType has a dual nature and will return true to both
isComposite() and isSingleton() calls. In most cases its enough to
check for just isComposite() or isSingleton(). However, there is a
isCompositeSingleton() available as well.

I used "qlalr --no-debug --no-lines --qt qqmljs.g" to generate the
qqmljsparser and qqmljsgrammar files from qqmljs.g.

Unit tests are included.

Change-Id: I91b303612c5e132143b325b9a8f982e9355bc90e
Reviewed-by: Alan Alpert (Personal) <416365416c@gmail.com>