Skip running arm jobs in PR.

Commit migrated from https://github.com/dotnet/corefx/commit/4a3cbc93f5b1895e2953667c331e7bf5d06fb4f5

Merge pull request dotnet/corefx#9951 from jamesqo/queue-enumerator

Make Queue.Enumerator.Current inlineable by the JIT

Commit migrated from https://github.com/dotnet/corefx/commit/85bd78ceb0527434db25fc6085521251cb78dda4

Merge pull request dotnet/corefx#9953 from stephentoub/update_dependencies

* Updating External dependencies to beta-24310-00
* Updating CoreFx dependencies to beta-24310-04

Commit migrated from https://github.com/dotnet/corefx/commit/a8c281447a346e3d1d7373322af4929077d53913

Updating CoreFx dependencies to beta-24310-04

Commit migrated from https://github.com/dotnet/corefx/commit/9affe80f9323d61d13a5215aa3f1cda86a0c15a1

Updating External dependencies to beta-24310-00

Commit migrated from https://github.com/dotnet/corefx/commit/74df1e6fc8bb1bee2f5382a416770d92f575b99b

Make Queue.Enumerator.Current inlineable by the JIT

Commit migrated from https://github.com/dotnet/corefx/commit/99dd849d7d7fff1be19cd858cd03abf43554ef67

Make Stack<T>.Enumerator.Current inlineable by the JIT (dotnet/corefx#9942)

* Make Stack<T>.Enumerator.Current inlineable by the JIT

Commit migrated from https://github.com/dotnet/corefx/commit/603c29ee79e5c03d3bb03b04f49e40084974d76c

Direct readers to the docs for .NET Standard (dotnet/corefx#9707)

* Direct readers to the docs

* Update net-platform-standard.md

Commit migrated from https://github.com/dotnet/corefx/commit/6574a3fb1310aa0aae66e4ee18b1604b2b1997c6

Merge pull request dotnet/corefx#9930 from dotnet-bot/UpdateDependencies20160709071418

Updating CoreFx dependencies to beta-24309-02

Commit migrated from https://github.com/dotnet/corefx/commit/05c3c028bb41a076963d38051918065ddec91c0b

Updating CoreFx dependencies to beta-24309-02

Commit migrated from https://github.com/dotnet/corefx/commit/c04e71ddd339545bd17521105fed6e4c530a2c85

Merge pull request dotnet/corefx#9923 from dotnet-bot/UpdateDependencies20160708111732

Updating External dependencies to beta-24308-00

Commit migrated from https://github.com/dotnet/corefx/commit/83432af396f442b6c81f46b0d2429cf9ae4c03a0

Updating External dependencies to beta-24308-00

Commit migrated from https://github.com/dotnet/corefx/commit/36ff4f9ee89b98615bf1280bb3e3e8136690dfcb

Merge pull request dotnet/corefx#9856 from jamesqo/stringptr-tests

Add some more test coverage for the new string(char*) impl

Commit migrated from https://github.com/dotnet/corefx/commit/e0ecfb1c14ae67d4a62a4fbd587dcffc8cff4e2a

Merge pull request dotnet/corefx#9763 from Priya91/runtimeinformation

Return file version for FrameworkDescription.

Commit migrated from https://github.com/dotnet/corefx/commit/0e0b46bf32008c174395366436ab60ae67e0bab9

Merge pull request dotnet/corefx#9849 from svick/tcpclient-null-client

Make sure TcpClient properties do not throw when the underlying Socket is null

Commit migrated from https://github.com/dotnet/corefx/commit/d55ba39cd2bc467923b99ec5c5714183d3452041

Merge pull request dotnet/corefx#9909 from prajwal-aithal/devel/arm-ci-job-setup

ARM-CI: Change Linux ARM Emulator job setup

Commit migrated from https://github.com/dotnet/corefx/commit/c35fb344f7a5ae4928c5298961a35e16045a65d8

Merge pull request dotnet/corefx#9906 from prajwal-aithal/devel/arm-ci-managed

ARM-CI: Enable build of managed components

Commit migrated from https://github.com/dotnet/corefx/commit/56c283d7015218246332f06fd3092538dffda340

ARM-CI: Change Linux ARM Emulator job setup

* Made the Linux ARM Emulator PR job automatic
  under the name linuxarmemulator_cross_<configuration>_prtest
* Added a push-based job for non-PR configuration
  under the name linuxarmemulator_cross_<configuration>

Signed-off-by: Prajwal A N <an.prajwal@samsung.com>
Commit migrated from https://github.com/dotnet/corefx/commit/75594f0cd303c3713e55a9d400ecc07b39b3ad83

Merge pull request dotnet/corefx#9886 from karajas/updateCsProj

Add TestTFMs for filtering to builds files

Commit migrated from https://github.com/dotnet/corefx/commit/5efcac32c5adf8487a6e2260ef338dc7cb99e4a9

Merge pull request dotnet/corefx#9860 from jamesqo/patch-2

Avoid repeated char[] allocations in CheckForColonInFirstPathSegment

Commit migrated from https://github.com/dotnet/corefx/commit/ca9e2b068e75898a3b35860632b1fec01cc5af93

ARM-CI: Enable build of managed components

To ensure that the native and managed components
are built on the same source code, enable managed
build as well. Tests are not needed

Signed-off-by: Prajwal A N <an.prajwal@samsung.com>
Commit migrated from https://github.com/dotnet/corefx/commit/19773a26afd1a3557912b46e4e58df09e392349c

Test TcpClient.ExclusiveAddressUse only on Windows

Commit migrated from https://github.com/dotnet/corefx/commit/38f381e884f752f3c59c0df62878d50a7ad905b0

Make sure TcpClient properties do not throw when the underlying Socket is null

Commit migrated from https://github.com/dotnet/corefx/commit/f0331c00fef6a7dc6beacdd37905360ec030591e

Avoid repeated char[] allocations in CheckForColonInFirstPathSegment

Commit migrated from https://github.com/dotnet/corefx/commit/1962d3f68e4d547cd1904f435e939c63b137cf1d

Merge pull request dotnet/corefx#9895 from svick/tcpclient-eau

Make sure TcpClient.ExclusiveAddressUse throws on Unix

Commit migrated from https://github.com/dotnet/corefx/commit/7fd85b9edcdf5fb5cd8405e4216e5ecd87c235d5

Merge pull request dotnet/corefx#9903 from jasonwilliams200OK/patches/freebsd

Define _BSD_SOURCE macro for getline on FreeBSD

Commit migrated from https://github.com/dotnet/corefx/commit/97962d1262d60b9dc5ea76b0eb590a68454d5e88

Merge pull request dotnet/corefx#9899 from josteink/freebsd-enodata

Fix undefined ENODATA on FreeBSD.

Commit migrated from https://github.com/dotnet/corefx/commit/b4e08d2021e45487879eb6df9b4609aecc2a8e88

Respond to PR feedback.

Commit migrated from https://github.com/dotnet/corefx/commit/8881947850f325c060b8c7f8879c55c80809e352

Add TestTFMs for filtering to builds files

Commit migrated from https://github.com/dotnet/corefx/commit/35cdee49419f8b06f523f00f8e183fcfb3eac065

Return fileversion for FrameworkDescription.

Commit migrated from https://github.com/dotnet/corefx/commit/a8bfaf8c9232c46aee94f0595073877bf6531aac

Merge pull request dotnet/corefx#9898 from dotnet-bot/UpdateDependencies20160707073516

Updating CoreFx dependencies to beta-24307-04

Commit migrated from https://github.com/dotnet/corefx/commit/dd40aa9636a7f0b57758264239c5bcfa119d10af

Merge pull request dotnet/corefx#9813 from svick/dcs-exception-escaping

Escape Messages of InnerExceptions in DataContractSerializer

Commit migrated from https://github.com/dotnet/corefx/commit/8b72260da5f0d832af2e5a249a59fa1150969f3b

Merge pull request dotnet/corefx#9718 from prajwal-aithal/devel/arm-emulator-ci

ARM-CI: Add CI checks for Linux ARM Emulator

Commit migrated from https://github.com/dotnet/corefx/commit/79c9b657f987f52ee3660125d65f8cdf80326ae2

Merge pull request dotnet/corefx#9878 from davidsh/contenttype_fix

Fix HttpWebResponse.ContentType when response has invalid headers

Commit migrated from https://github.com/dotnet/corefx/commit/d430ab9aab5ef2dcfd9fcbefcb5f8bd7a76d0c0f

Fix undefined ENODATA on FreeBSD.

Commit migrated from https://github.com/dotnet/corefx/commit/82790a912632aa94ed9c73243edc7025c8cc6b60

Updating CoreFx dependencies to beta-24307-04

Commit migrated from https://github.com/dotnet/corefx/commit/49cf43520de2cecd24bdce713bea58e6becf8cdc

Define _BSD_SOURCE macro for getline on FreeBSD

According to manpage:

https://www.freebsd.org/cgi/man.cgi?query=getline&apropos=0&sektion=0&manpath=FreeBSD+8.2-RELEASE&format=html

FreeBSD requires either `_WITH_GETLINE`, `_BSD_SOURCE` or `_GNU_SOURCE`
defined to make `getline` available via `<stdio.h>`.

By adding a definition in CMake is the cleanest way as otherwise we get:

> macro name is a reserved identifier

and muting it with `pragma` will be a messier solution
(e.g. dotnet/corefx@ba88726).

Commit migrated from https://github.com/dotnet/corefx/commit/03ac51a99d963f5324eb1b749d3e425d21ec2115

Dispose temporary Socket

Commit migrated from https://github.com/dotnet/corefx/commit/3f039400cc67fc0b7b5c5e9b40e22dd868cba120

Merge pull request dotnet/corefx#9879 from MattGal/Support_native_compilation

Add UWP platform and TestILC 1.4 dependencies

Commit migrated from https://github.com/dotnet/corefx/commit/eb1557f6f5cabcf335eeb26f1a80788653edf6ff

Make sure TcpClient.ExclusiveAddressUse throws on Unix

Commit migrated from https://github.com/dotnet/corefx/commit/4e94c9279aa7fe7b0d050494c2d2948f7b9dc150

Merge pull request dotnet/corefx#9888 from stephentoub/valuetask_tests

Fix ValueTaskTests deadlocking on a single core machine

Commit migrated from https://github.com/dotnet/corefx/commit/c02ff1caafb87de726ad76e069926ab29438a87a

Fix ValueTaskTests deadlocking on a single core machine

Commit migrated from https://github.com/dotnet/corefx/commit/37241de4660e15bafe23af0e7fb189c9833238bb

Merge pull request dotnet/corefx#9794 from tarekgh/FilterToTestTFM

Support filtering to TestTFM

Commit migrated from https://github.com/dotnet/corefx/commit/859825809211187a4b7bf717806ea3099cfd567f

Merge pull request dotnet/corefx#9881 from dotnet-bot/UpdateDependencies20160707061822

Updating External dependencies to beta-24307-00

Commit migrated from https://github.com/dotnet/corefx/commit/2bd5803447ed47bf397387691fb13c9f32654a5d

Updating External dependencies to beta-24307-00

Commit migrated from https://github.com/dotnet/corefx/commit/8b56f1d2c443111623a7a358e4d1b8bd84c41c91

Add UWP platform and TestILC 1.4 dependencies to test-runtime to support .NET Native compilation

Commit migrated from https://github.com/dotnet/corefx/commit/c82563087278b83a37bee3ed1f86f86c9fa4f055

ARM-CI: Add CI checks for Linux ARM Emulator

Some changes to the native part of corefx breaks builds
for the Linux ARM Emulator. Thus adding CI checks for
native part of corefx using cross build based on the
emulator rootfs.

Signed-off-by: Prajwal A N <an.prajwal@samsung.com>
Commit migrated from https://github.com/dotnet/corefx/commit/b5e214ef8c63a16da807115e3c4643b38df819a2

Fix HttpWebResponse.ContentType when response has invalid headers

The HttpWebResponse.ContentType property is supposed to return a string value with the response's `Content-Type` header value. Even if the response header is considered non-conformant with RFC7231, the value is returned as-is as received on the wire.

In .NET Core, HttpWebRequest/HttpWebResponse is implemented as a wrapper around HttpClient. HttpClient has a strongly-typed model for headers. The current implementation of HttpWebResponse.ContentType was trying to use the strongly typed header from HttpClient. In cases where the header was malformed, it was returning empty string. This was a difference in behavior from .NET Framework.

The fix is to use TryGetValues() to retrieve the raw response header value for the 'Content-Type' header. This will result in compatible behavior with .NET Framework.

Fixes dotnet/corefx#9433.

Commit migrated from https://github.com/dotnet/corefx/commit/e0ce0fd8ab9f75583870609a5da26bab916d65e5

Merge pull request dotnet/corefx#9861 from jamesqo/patch-3

Remove unused static field from Uri

Commit migrated from https://github.com/dotnet/corefx/commit/4f54311cbde6a599dbb987e4338857b4cea3cec0

Updating External dependencies to beta-24306-00 (dotnet/corefx#9858)

Commit migrated from https://github.com/dotnet/corefx/commit/fd9432af10e8e3600d1fc7edb9d129567a838974

Remove unused static field from Uri

Commit migrated from https://github.com/dotnet/corefx/commit/8723a1cf812670734579872cf8123f1f422b5a64

Add more test coverage for dotnet/coreclrdotnet/corefx#6119 (dotnet/corefx#9844)

* Add more test coverage for dotnet/coreclrdotnet/corefx#6119

Commit migrated from https://github.com/dotnet/corefx/commit/860d28cbb752a7a5ccd191b6f784c4f4d15909e2

Merge pull request dotnet/corefx#9853 from dotnet-bot/from-tfs

Merge changes from TFS

Commit migrated from https://github.com/dotnet/corefx/commit/907aae8d3a113e2f46048b6fe43c3a72eb05af98

Add some more test coverage for the new string(char*) impl

Commit migrated from https://github.com/dotnet/corefx/commit/d2e379bc719aa4f5ff09e7924ae4df1becb08ebd

Update wordings for diagnostics tools dependencies comments.

[tfs-changeset: 1616096]

Commit migrated from https://github.com/dotnet/corefx/commit/bcb337cfc50bfa3ef7822f5895cc459bd0c1627a

Merge pull request dotnet/corefx#8621 from rainersigwald/init-tools-failure-cases

Improved failure handling in init-tools.sh

Commit migrated from https://github.com/dotnet/corefx/commit/1c996269956bd41502d5c566973fda71386e960e

Fail init-tools atomically

Before this change, a failure fairly early in the `init-tools.sh` process could result in subsequent attempts being short-circuited.

This introduces a marker file that is only written at the very end of the script, so that a `dotnet restore` or `init-tools.sh`-from-package failure can be retried immediately.

Commit migrated from https://github.com/dotnet/corefx/commit/a52a72e658e278cbf7ab470c0875be4537bf11bc

Merge pull request dotnet/corefx#9845 from dotnet-bot/UpdateDependencies20160705051759

Updating External dependencies to beta-24305-00

Commit migrated from https://github.com/dotnet/corefx/commit/c37a850883475a282a514997e6f634439d9cada0

Updating External dependencies to beta-24305-00

Commit migrated from https://github.com/dotnet/corefx/commit/107f1b35a904a31547fd51ea949fb605bd0fe039

Add some ReadOnlyDictionary tests (dotnet/corefx#9829)

* Add some ReadOnlyDictionary tests

- Also fixes the DebuggerAttributes for when the proxy and parent have
different generic parameters by providing a customization overload

Commit migrated from https://github.com/dotnet/corefx/commit/f0fc81da301e070e69392b5cbafb058270a7a081

Merge pull request dotnet/corefx#9834 from jamesqo/patch-1

Avoid a boxing allocation in UriBuilder.ToString

Commit migrated from https://github.com/dotnet/corefx/commit/be4613a8970c9471f554c391cc5f80766e7daf2d

Avoid a boxing allocation in UriBuilder.ToString

Commit migrated from https://github.com/dotnet/corefx/commit/7b2d47dfb6a735280aca8f3eca3008586a0dc359

Fix facade-code-coverage.bat for System.Private.CoreLib changes (dotnet/corefx#9831)

Commit migrated from https://github.com/dotnet/corefx/commit/3e82a5722cf8b847cb510e16b06aaa98a25bc07f

Tweak PR contribution docs

Commit migrated from https://github.com/dotnet/corefx/commit/b90532bc97b07234a7d18073819d019645285f1c

Add docs for PR (feedback) (dotnet/corefx#9827)

* Add docs for PR (feedback)

Fixes dotnet/corefx#1063

* Change sentence style

* Fix some wording

Commit migrated from https://github.com/dotnet/corefx/commit/a2f7b55ef1f4001b136d81f4718a8ca5cfffdf03

Merge pull request dotnet/corefx#9830 from dotnet-bot/UpdateDependencies20160703071220

Updating CoreFx dependencies to beta-24303-04

Commit migrated from https://github.com/dotnet/corefx/commit/cf598814de8d181adc245e0f619e2dde8ab1ca72

Updating CoreFx dependencies to beta-24303-04

Commit migrated from https://github.com/dotnet/corefx/commit/1bb03180b6dae7375339287be60291a7495fd3ab

Merge pull request dotnet/corefx#9822 from stephentoub/add_path_tests

Rebase and replace dotnet/corefx#7195

Commit migrated from https://github.com/dotnet/corefx/commit/27f47143540ad6589c2618ef28e802394c9341c9

Merge pull request dotnet/corefx#9803 from hughbe/immutable-array-tests

Add ImmutableArray IList and IList<T> tests

Commit migrated from https://github.com/dotnet/corefx/commit/6b57850d45613808e7cf20bb4b594e899e6297bb

Add path tests

Add tests for path error mapping

Commit migrated from https://github.com/dotnet/corefx/commit/40a0c3d8f6e9075762075c8de615f9b511ab145e

Merge pull request dotnet/corefx#9819 from dotnet-bot/UpdateDependencies20160703071716

Updating CoreFx dependencies to beta-24303-02

Commit migrated from https://github.com/dotnet/corefx/commit/5ba0363b28ca6d34cfd82cf2aef7f189b228de42

Merge pull request dotnet/corefx#9821 from hughbe/invalidsurrogate-emit

Remove some random data from System.Reflection.Emit.Tests

Commit migrated from https://github.com/dotnet/corefx/commit/4b56c5b0089eaed18f7a59edf7d2737977922b93

Fix version numbers causing restore failures

Commit migrated from https://github.com/dotnet/corefx/commit/16536c878fa337b6435b8bab09682b1312af5c69

Add some more tests for PropertyBuilder.Name

Commit migrated from https://github.com/dotnet/corefx/commit/36f1ec93ec82065b1c457bec49eae3dcb2327cc9

Updating CoreFx dependencies to beta-24303-02

Commit migrated from https://github.com/dotnet/corefx/commit/9f38e4271c764e8fcc1940a31302f46745185996

Remove some random data from System.Reflection.Emit.Tests

Currently, we generate random data in some of the System.Reflection.Emit
tests
One example is om the test for PropertyBuilder.Name that generates a
random char.

Due to bug dotnet/corefx#7166 xunit crashes when there is an invalid char (e.g. lone
high surrogate) in a MemberData or InlineData

Should hopefully fix dotnet/corefx#9820

Commit migrated from https://github.com/dotnet/corefx/commit/30bfa3e05dc3b561b415d9552aa12071ec0b6aa5

Merge pull request dotnet/corefx#9818 from dotnet-bot/UpdateDependencies20160703051842

Updating External dependencies to beta-24303-00

Commit migrated from https://github.com/dotnet/corefx/commit/9f2fd54bba3c44547518cffbc1a2dce9de8064a3

Updating External dependencies to beta-24303-00

Commit migrated from https://github.com/dotnet/corefx/commit/50988a7761e18fe88de876e2aa400a55abfedb8a

Merge pull request dotnet/corefx#9033 from ianhays/zip_binarycompattests

Add Compression binary compat tests

Commit migrated from https://github.com/dotnet/corefx/commit/800502ac3d10365d473fc1936180a2c8d822d2cc

Escape Messages of InnerExceptions in DataContractSerializer

Commit migrated from https://github.com/dotnet/corefx/commit/1de20c9aced8e2499bd303788741cc4486ebd42e

Add ImmutableArray IList and IList<T> tests

Commit migrated from https://github.com/dotnet/corefx/commit/d33bf450bd23e7b93d9643073c7a4ccaa7926619

Merge pull request dotnet/corefx#9778 from mellinoe/operstatenotfound-fix

Guard file reads in /sys/class/net/<iface> directories

Commit migrated from https://github.com/dotnet/corefx/commit/72f546c30e61b485546d7c5c0397b8ccc406efa4

Support filtering to TestTFM

This change is to support filtering according to the TestTFM. e.g. can do
     “build.cmd /p:FilterToTestTFM=net46”
The change here is splitting the Build phase from the Test phase in dir.traversal.targets
so we don’t have to rebuild the test assemblies when passing TestTFM property to run the test.

Now if FilterToTestTFM is not specified, we default running the tests as netcoreapp1.0
so when issuing “build.cmd/sh” Command without passing FilterToTestTFM, it will
filter the tests to netcoreapp1.0 and run those tests.
I have enabled one of the test projects System.AppContext.Tests to support net46
as example, next step will be Enabling the rest of all projects to run against all
platforms (net46, net461, net462, netcore50 and netcore50aot)

Commit migrated from https://github.com/dotnet/corefx/commit/3e714b8b1efe68c693469b6cab7883ff8a1b51d8

port System.Native to be g++ compatible (dotnet/corefx#9791)

Commit migrated from https://github.com/dotnet/corefx/commit/29326684cf743313cf8c4e7d22829a7e658cf4f5

Merge pull request dotnet/corefx#9793 from jamesqo/uribuilder-replace

Use string.Replace for UriBuilder.set_Path

Commit migrated from https://github.com/dotnet/corefx/commit/5f0c4b02842eb4018d4bd344b35fc1c926219e02

Update TestData version

Commit migrated from https://github.com/dotnet/corefx/commit/de76ec977d0ced713ff6d9a4cbeb8249ebcfd202

Add Compression binary compat tests

We don't currently test binary equality of outputted test zips, so tested compatibility is limited to the parts of the header we expose via a ZipArchive API. This commit adds some tests that compare normal and unicode zips between the current version and .NET 4.5 and .NET 4.6.

Commit migrated from https://github.com/dotnet/corefx/commit/f7840734bdcf1686d185a6df3405d0c5128ff280

Use string.Replace for UriBuilder.set_Path

Commit migrated from https://github.com/dotnet/corefx/commit/0c80ffad824bea91be2afa39e0c49c56608e20e8

Merge pull request dotnet/corefx#9790 from dotnet-bot/UpdateDependencies20160701051957

Updating External dependencies to beta-24301-00

Commit migrated from https://github.com/dotnet/corefx/commit/56c93ddb71daf303bf1c95292578d1895f6e0d7d

Merge pull request dotnet/corefx#9784 from ericstj/bumpVersionsServicing

Increment versions post servicing

Commit migrated from https://github.com/dotnet/corefx/commit/8519e9b2bb83e827df23244272cd53e3a3163a59

Updating External dependencies to beta-24301-00

Commit migrated from https://github.com/dotnet/corefx/commit/65518bc243941aee3d4fabd9a3757492e9f81eec

Merge pull request dotnet/corefx#9740 from prajwal-aithal/devel/arm-cross-objcopy-fix

ARM: resolve objcopy version to be used

Commit migrated from https://github.com/dotnet/corefx/commit/f142cda5629e04998a26c0596165461b501c40ce

Merge pull request dotnet/corefx#9786 from karajas/fixTestBuildBreak

Revert System.Private.DataContractSerialization pkgproj reference to csproj reference

Commit migrated from https://github.com/dotnet/corefx/commit/4ff98bdc7a3cd981358f6772ccc2d6c2ec5c9da4

Revert System.Private.DataContractSerialization pkgproj reference to csproj reference

System.Runtime.Serialization.Json, System.Runtime.Serialization.Xml, System.Xml.XmlSerializer are compiled against it's implementation, it has no compile time assets.

Commit migrated from https://github.com/dotnet/corefx/commit/37fb7cf005fc4dd95ddb196150cac62955acf7c5

Increment versions post servicing

This bumps the versions of the packages we intend to ship out of the
servicing branch so that the master will be later than release.

Commit migrated from https://github.com/dotnet/corefx/commit/b2d61e78e904b574b2e7fde61d82b29a0ea6c767

Add instructions for targeting .NET Core with MSBuild projects (dotnet/corefx#9403)

* Add step by step instructions for using MSBuild to target .NET Core
* Rearrange and edit instructions for targeting .NET Core with MSBuild
* Link to updated NuGet extension for VS, add instructions allowing PCL/dnxcore50 packages to be referenced
* Reformatting
* Update existing getting started instructions
* Change prerequisite to VS 2015 Update 3, which fixes error that AnyCPU isn't supported
* Add comments for MSBuild properties
* Recommend project.json for new projects
* Add CoreApp as another recommendation to start with
* Start with Console app template instead of portable library, use Microsoft.NETCore.App package
* Fix indentation

Commit migrated from https://github.com/dotnet/corefx/commit/79a7c578cce7cf82eb4c2bf6d0b0fb5dba2cb895

Merge pull request dotnet/corefx#9555 from ianhays/fs_symlinktest

FileSystem: Expand CanCreateSymlinks test

Commit migrated from https://github.com/dotnet/corefx/commit/0f671aef0a82415b322e0ecfb639dcb959c670af

arm: resolve objcopy version to be used

objcopy binary used before does not work when doing cross build.
In the case of cross build TOOLCHAIN-objcopy is to be used where
TOOLCHAIN is defined according to the target architecture being
built for.

Signed-off-by: Prajwal A N <an.prajwal@samsung.com>
Commit migrated from https://github.com/dotnet/corefx/commit/9cd4b3cc70622c2d7d80c403162b150904c4fc68

Additional guard against missing network files.

* Add guard for the case where a file disappears between call to
  File.Exists and when we try to open it.

Commit migrated from https://github.com/dotnet/corefx/commit/dd6e9208a2bcd5b36e7f61bd243c5918982868af

Merge pull request dotnet/corefx#9781 from bartonjs/use_keysizevalue

Set KeySizeValue instead of doing gymnastics in LegalKeySizes.

Commit migrated from https://github.com/dotnet/corefx/commit/9e253430aea9b8d2420266183d479201af8ec505