Merge pull request dotnet/corefx#10070 from dotnet-bot/UpdateDependencies20160714100131

Updating CoreFx dependencies to beta-24314-05

Commit migrated from https://github.com/dotnet/corefx/commit/383e9fc920afd80f373d8ba2bddf9fe0fae66a81

Updating CoreFx dependencies to beta-24314-05

Commit migrated from https://github.com/dotnet/corefx/commit/dbc207eb595a3367088245419dbfd2a1035d2c12

Remove automatic curl Expect header if the request was explicitly set to not have one (dotnet/corefx#10052)

Commit migrated from https://github.com/dotnet/corefx/commit/b0045645433b457df9ce2503fdfeb19066d84dfd

Merge pull request dotnet/corefx#10064 from karajas/updateUWPDesktop

Update Builtools to 614-01 and include UWP runner in test-runtime

Commit migrated from https://github.com/dotnet/corefx/commit/4438faa5dbd7a2a2918d0051eee81c26d3ccdabe

Update Builtools to 614-01

Include uwp runner in test-runtime and add validation pattern for it's version number

Commit migrated from https://github.com/dotnet/corefx/commit/0dc395f31ccc237aeeba50c42e311d8438f037f6

Merge pull request dotnet/corefx#10045 from CIPop/test

Adding server code. Fixing IIS application deployment.

Commit migrated from https://github.com/dotnet/corefx/commit/dca1b0fcc8ec1d1dbe42d56222b18fcc5307d32b

Merge pull request dotnet/corefx#9847 from ctyar/issue-5055

Clean up and Format System.Collections

Commit migrated from https://github.com/dotnet/corefx/commit/0c5bf853e680ef401703c179ad3b065c49077929

Merge pull request dotnet/corefx#10060 from vitek-karas/OptionalAndObjectArrayInvokeTests

Add delegate and MethodInfo invoke special case tests

Commit migrated from https://github.com/dotnet/corefx/commit/e212a47fdfb9fa044f020e99fa8cbfb31eec6d71

Add more rigorous testing for Stream.CopyTo (dotnet/corefx#9929)

Commit migrated from https://github.com/dotnet/corefx/commit/eccbe59d961d2b42b7eb5a012e9247af70d54424

Merge pull request dotnet/corefx#10059 from dotnet-bot/UpdateDependencies20160714011600

Updating CoreFx dependencies to beta-24314-03

Commit migrated from https://github.com/dotnet/corefx/commit/d2339ee81796cc993682cca0a3155269a1e9d607

Merge pull request dotnet/corefx#9732 from huanwu/xml2darraytests

Xml Type with 2D Array property tests

Commit migrated from https://github.com/dotnet/corefx/commit/7d21e0b90094ee07321398ea12d6be6b8326a08d

Add delegate and MethodInfo invoke special case tests for optional parameters and args handling.

Adds the same set of tests for both MethodInfo.Invoke and
Delegate.DynamicInvoke.
- Tests around optional parameters and the behavior when passing Missing
as a value for it.
- Tests around handling of the arguments to the invoke method, it should
be able to consume arrays convertible to object[].

Commit migrated from https://github.com/dotnet/corefx/commit/6681e3cf43437a90d5fad72db11daf536675bc6d

Updating CoreFx dependencies to beta-24314-03

Commit migrated from https://github.com/dotnet/corefx/commit/d03c57ae02c5ec124542c857e6a58c1436e0543d

Merge pull request dotnet/corefx#10055 from dotnet-bot/UpdateDependencies20160714052043

Updating External dependencies to beta-24314-00

Commit migrated from https://github.com/dotnet/corefx/commit/4a53fd2dcc8ede8e1677deb92090a38fcde186e0

Merge pull request dotnet/corefx#10034 from vitek-karas/DelegateDefaultParamTests

Add tests for Delegate.DynamicInvoke with default parameters

Commit migrated from https://github.com/dotnet/corefx/commit/40ff74b0f536b9ea46b2eb22ab5da5e681368faa

Merge pull request dotnet/corefx#10044 from ericeil/HttpTestStarvation

Avoid wrapping async I/O in synchronous methods in the HTTP tests

Commit migrated from https://github.com/dotnet/corefx/commit/d43ced9376baa305f6369f21796f2692069aa263

Fix serialization primitives version number in project.jsons

Commit migrated from https://github.com/dotnet/corefx/commit/9853da4088f0ed82a6508021ff90279ddc4d9cc9

Updating External dependencies to beta-24314-00, CoreFX to 24314-02

Commit migrated from https://github.com/dotnet/corefx/commit/be3a0f7e557a1d325fca506d04331611ead5c62f

Merge pull request dotnet/corefx#10058 from dotnet-bot/UpdateDependencies20160714084151

Updating CoreClr dependencies to beta-24314-02

Commit migrated from https://github.com/dotnet/corefx/commit/7d45293a98b568e7f24cae7ffa4a8dfcaf8de800

Updating CoreClr dependencies to beta-24314-02

Commit migrated from https://github.com/dotnet/corefx/commit/34376f598e0dd49bd2a7610b3028b88a4ea3c0d0

Clean up and Format System.Collections

Fix dotnet/corefx#5055

Commit migrated from https://github.com/dotnet/corefx/commit/11356d564721e0f594f4e52d1efd1fc9cb1fbefc

Merge pull request dotnet/corefx#10029 from prajwal-aithal/devel/arm-ci-documentation

Documentation: Added documentation for cross building for Linux Emulator

Commit migrated from https://github.com/dotnet/corefx/commit/b76659daf1507bacc539245a5abe47c980616ff5

docs: Added documentation for building for Linux Emulator

Adding documentation for building corefx for Linux ARM Emulator

Signed-off-by: Prajwal A N <an.prajwal@samsung.com>
Commit migrated from https://github.com/dotnet/corefx/commit/6885fa46e740d6750efe7b009074ecc34eacb229

Merge pull request dotnet/corefx#10048 from dotnet-bot/from-tfs

Merge changes from TFS

Commit migrated from https://github.com/dotnet/corefx/commit/98113ebbb2effcfd9f4a99ad6612e0ddf0886240

Merge pull request dotnet/corefx#9655 from corivera/SplitSslPacketFix

Add SqlClient Read retry logic when receiving undersized packets during prelogin

Commit migrated from https://github.com/dotnet/corefx/commit/276578283990e7c6adb8965c1ab64c5036c466ac

Add Support For Xamarin and Mono for WCF Facades.

[tfs-changeset: 1617567]

Commit migrated from https://github.com/dotnet/corefx/commit/8c62c72a8bd1edc7b295924372d1a05ece391517

Merge pull request dotnet/corefx#10042 from karajas/setFilterToTestTFM

Set default FilterToTestTFM to be netcoreapp1.0 in dir.props

Commit migrated from https://github.com/dotnet/corefx/commit/d10affe137bab7a791ebda53405016c078c0073a

Adding server code. Fixing IIS application deployment.

Commit migrated from https://github.com/dotnet/corefx/commit/cb0becbb7e546ffa5f265f862e76bc0fa445ec50

Update portable pdb spec for embedded source (dotnet/corefx#10017)

Commit migrated from https://github.com/dotnet/corefx/commit/8bd27ad852d035bebbc35c021c74e9e56ee90e77

Avoid wrapping async I/O in synchronous methods in the HTTP tests, as this can lead to ThreadPool starvation, causing tests to run longer (waiting for the ThreadPool to inject enough threads) and possibly to time out.

Commit migrated from https://github.com/dotnet/corefx/commit/af17a7ab4bd0630f71e44bbe566bb712aeb86b5c

Set default FilterToTestTFM to be netcoreapp1.0 in CoreFx

Commit migrated from https://github.com/dotnet/corefx/commit/17c7db687f9c0470f1859c4412a1c1b876370ce7

Merge pull request dotnet/corefx#10039 from dotnet-bot/UpdateDependencies20160713075936

Updating CoreFx dependencies to beta-24313-04

Commit migrated from https://github.com/dotnet/corefx/commit/617fa6ac0cc8c3dc6acf423a5248fcdb78cf7c07

Updating CoreFx dependencies to beta-24313-04

Commit migrated from https://github.com/dotnet/corefx/commit/b7fb903a5318f48ff9c4e38bc941f64a5c96ec67

Merge pull request dotnet/corefx#10036 from stephentoub/streamingcontext

Add StreamingContext public APIs back to contract

Commit migrated from https://github.com/dotnet/corefx/commit/752e632432575d1f324a92b395fc381f3fc3ac54

Merge pull request dotnet/corefx#10027 from karajas/updateBuildTools

Update BuildTools to 613-01

Commit migrated from https://github.com/dotnet/corefx/commit/37dc4724ff0a10db8841c593c1ed6e88d7e6c70a

Add StreamingContext public APIs back to contract

Necessary for formatters.

Commit migrated from https://github.com/dotnet/corefx/commit/e8169527905734b295708a8cb6922057908f45e7

Merge pull request dotnet/corefx#9571 from Dmitri-Botcharnikov/local-vars

Local variables support in System.Diagnostics.Debug.SymbolReader for Portable PDB

Commit migrated from https://github.com/dotnet/corefx/commit/f6e368fc8a34a641ca3294b66d3283c9a41c508c

Add tests for Delegate.DynamicInvoke with default parameters

Add tests for various cases where Delegate.DynamicInvoke is used on a
delegate with default parameters. The tests were more or less copied
from the respective MethodInfo.Invoke tests since the default parameter
behavior should be the same between these two code paths.

Commit migrated from https://github.com/dotnet/corefx/commit/863393873a00aa273948fb7b375a48cdd596012f

Merge pull request dotnet/corefx#9912 from steveharter/X509Ecc

Add Windows 10 elliptic curve support to X509

Commit migrated from https://github.com/dotnet/corefx/commit/27c3653e447be616442e8f70cd84d699affb4f8e

Merge pull request dotnet/corefx#10026 from ramarag/ARM64_RuntimeInformation

Fixing Field intialization for Arm64

Commit migrated from https://github.com/dotnet/corefx/commit/b30d6ea8f39315f3ae4469652269183618065b4f

Update BuildTools to 613-01

Commit migrated from https://github.com/dotnet/corefx/commit/0b12bec607ef1ecc7c67bac1db011577d174425e

Merge pull request dotnet/corefx#10020 from dotnet-bot/UpdateDependencies20160712072159

Updating CoreFx dependencies to beta-24312-04

Commit migrated from https://github.com/dotnet/corefx/commit/06120e5a3cee040268a7d0616bab5466eb091570

Fixing Field intialization for Arm64

Commit migrated from https://github.com/dotnet/corefx/commit/579d5424507b1ff356cc64cfe4cd68a730755bbf

Merge pull request dotnet/corefx#9936 from ericstj/xamarinValidation

Validate Xamarin frameworks

Commit migrated from https://github.com/dotnet/corefx/commit/5159e3afc8377083c093e06939241a40394a037a

Add support for Ecc

Commit migrated from https://github.com/dotnet/corefx/commit/3debb53396c688ae4111df3222282cd9537b7760

Merge pull request dotnet/corefx#10008 from vitek-karas/MethodInfoInvokeDefaultParams

Add tests for MethodInfo.Invoke with default parameters

Commit migrated from https://github.com/dotnet/corefx/commit/66281bb90a4cfdd61d53799a1cacd705dab5cd48

Update BuildToolsVersion to 00612-01

Commit migrated from https://github.com/dotnet/corefx/commit/0320a859fe5daef851c065101c881435b0b4077f

Validate Xamarin frameworks

This adds validation for Xamarin frameworks and fixes some packages
which were not representing Xamarin correctly.

Commit migrated from https://github.com/dotnet/corefx/commit/e586f1b2f4eca793de97361aa4b981eb966d13ec

Add tests for MethodInfo.Invoke with default parameters

Add tests for various cases where MethodInfo.Invoke is used on a method with default parameters.

General cleanup of the affected test file
- Renamed test methods to include what they're actually testing (instead of numbering scheme).
- Use Assert.Equal instead of custom implementation based on Assert.True (less code).
- Get rid of lot of local variables which are not that useful - if we debug this we would
  step into the Invoke call anyway, and that has all the important stuff as parameters anyway.
  Keeps the tests much shorter and easier to read.
- I didn't change the actual behavior of any of the existing tests.
- For now I kept the test types as they are (although the names are pretty bad).
- Small formatting changes.

Commit migrated from https://github.com/dotnet/corefx/commit/d93ce9416a40f0aa18d6a50eeaab3e84597aebc1

Updating CoreFx dependencies to beta-24312-04

Commit migrated from https://github.com/dotnet/corefx/commit/e890f759240d5632d172fe7097f7b537861d5262

Merge pull request dotnet/corefx#10016 from ericstj/restoreNoCache

Specify --no-cache on restore

Commit migrated from https://github.com/dotnet/corefx/commit/04dc5f309fc0ff05f7099b02c612ad1e1dc2b173

Merge pull request dotnet/corefx#10009 from dotnet-bot/UpdateDependencies20160712011800

Updating CoreFx dependencies to beta-24312-03

Commit migrated from https://github.com/dotnet/corefx/commit/df5cf73c1204e1b728b7ee7ac627eeda19bf9e49

Xml Type with 2D Array property tests
Add two tests to cover the scenario for serialization/deserialization for the object of the type with 2D array property
This is to cover the test hole for this issue: dotnet/wcfdotnet/corefx#1274

Commit migrated from https://github.com/dotnet/corefx/commit/92b7f0be7466497167ae48ab7f6fac7d0e287115

Merge pull request dotnet/corefx#9971 from jhendrixMSFT/master

Remove Mac OS minor version number from package filtering.

Commit migrated from https://github.com/dotnet/corefx/commit/89eba9452945e57932b0d860078558183f6f202f

Specify --no-cache on restore

This lets us publish a package and consume it immediately from our
builds.

Without this our CI clients were relying on an HTTP cache of our myget
feeds and failing when we updated projects or buildtools.

Commit migrated from https://github.com/dotnet/corefx/commit/65592cc6d27bd8f05f13878a91c8623ffbdf87fb

Add System.Diagnostics.Debug.SymbolReader assembly.

This assembly allows reading a debug information from portable pdb files.

Commit migrated from https://github.com/dotnet/corefx/commit/ed5916ad413c5852380057214f2362b91e46af3d

Merge pull request dotnet/corefx#9993 from bartonjs/x509_upref

Use X509UpRef instead of X509Duplicate

Commit migrated from https://github.com/dotnet/corefx/commit/63819d9824d452de9a6e7116e193ba16249ac2ce

Port List changes from dotnet/coreclrdotnet/corefx#6212 (dotnet/corefx#9987)

Commit migrated from https://github.com/dotnet/corefx/commit/2df67e0dafb452fce395aaf67dbcb59e63f08c7e

Updating CoreFx dependencies to beta-24312-03

Commit migrated from https://github.com/dotnet/corefx/commit/7558557df0db57e0f82a9dc3dbde0359f4454a3f

Merge pull request dotnet/corefx#10006 from dotnet-bot/UpdateDependencies20160712051802

Updating External dependencies to beta-24312-00

Commit migrated from https://github.com/dotnet/corefx/commit/c5dd426fffd053349abf466191f8201cfb3aa067

Merge pull request dotnet/corefx#10007 from dotnet-bot/UpdateDependencies20160712072030

Updating CoreFx dependencies to beta-24312-02

Commit migrated from https://github.com/dotnet/corefx/commit/f1e0091d80cffa7ff6758b75c1762f95469f0eaf

Updating CoreFx dependencies to beta-24312-02

Commit migrated from https://github.com/dotnet/corefx/commit/f30e5cf82ba3ec24aa6973dc7c78ef9a95cbe240

Updating External dependencies to beta-24312-00

Commit migrated from https://github.com/dotnet/corefx/commit/b997f4613c2cb2beaff08d1d986aeaaffdf3c77b

Merge pull request dotnet/corefx#9956 from stephentoub/tcpclient_dispose

Improve behavior of TcpClient Dispose concurrent with ConnectAsync

Commit migrated from https://github.com/dotnet/corefx/commit/a7f31ae36cc59dfbac8772ea37384146677356bc

Merge pull request dotnet/corefx#10005 from justinvp/color

Windows.UI.Color: Simplify Equals

Commit migrated from https://github.com/dotnet/corefx/commit/ae756a733e21e6d88827a8b3894075bf1b972231

Windows.UI.Color: Simplify Equals

Simplify the code for Equals(object) and the equality operator.

Commit migrated from https://github.com/dotnet/corefx/commit/997dd70776f59e0cb7f6b14d0b6677da8b60ab7a

Merge pull request dotnet/corefx#9974 from Priya91/windowsnano

Check for RunTest.cmd before running test on Nano.

Commit migrated from https://github.com/dotnet/corefx/commit/afa634708deb4b921dd1e0e6dc5f26ddd0e143b2

Add CryptoNative_X509UpRef

Use X509UpRef instead of X509Duplicate

X509Duplicate copies the certificate data into new memory, but none of the
callers needed copy semantics, just ensuring that the native components
which also are using the same memory don't unexpectedly free the object.

Protection from early/double-free is what the native reference count field is
for, so use UpRef instead of Duplicate.

Since we are currently targeting OpenSSL 1.0.x X509Upref adds to
references directly, X509_up_ref does not exist in the 1.0.x ABI.

Microbenchmark:
Cloning a certificate 1000 times by cert.Handle, measuring maximum resident set:
X509Duplicate (before): 48213 +/- 1501KB
X509UpRef (after): 39208 +/- 1021KB
Memory reduction: 9005 +/- 1816KB

Commit migrated from https://github.com/dotnet/corefx/commit/8f5eac55eb498c3c94f5a89655f4d7ad79a8711a

Merge pull request dotnet/corefx#9976 from Priya91/arm

Enable arm testing in PRs.

Commit migrated from https://github.com/dotnet/corefx/commit/e5200708636ab007780d51755fed0beaf21dc4a6

Enable arm testing in PRs.

Commit migrated from https://github.com/dotnet/corefx/commit/95407323101636c6d8b55b6280afe7c404375dbc

Check for RunTest.cmd before running test on Nano.

Commit migrated from https://github.com/dotnet/corefx/commit/285ad69b1cb2a914ccd809f29fce1d0e6ca3e0f1

Enabling perf tests' execution using universal runner (dotnet/corefx#9916)

Commit migrated from https://github.com/dotnet/corefx/commit/81fb70ee723fad044de1484f2bdfcf84c1b7e857

Remove Mac OS minor version number from package filtering.

Building on Mac OS 10.11 produces binaries that are compatible with
version 10.10.  It order to build packages on Macs running 10.11 I have
removed the OS minor version number as part of the package filtering.

Commit migrated from https://github.com/dotnet/corefx/commit/04b54e7ac019640a30272202aaaa210a02a29989

Merge pull request dotnet/corefx#9963 from dotnet-bot/UpdateDependencies20160711071459

Updating CoreFx dependencies to beta-24311-02

Commit migrated from https://github.com/dotnet/corefx/commit/5473d68be9ca1398c42a441c1a0e8e6b0b1328db

Improve behavior of TcpClient Dispose concurrent with ConnectAsync

TcpClient.Dispose is not meant to be used concurrently with other operations on the instance, but some code does do so as a way to provide a cancellation mechanism.  There are two easily hit issues with this:
1. On Unix, the ConnectAsync operation doesn't publish the actual Socket on which a connection was made until after the connection is established, as it needs to use temporary sockets to try each potential target address, and publishing it before connecting could end up publishing a Socket that won't end up being the actual one used.  As such, if a Dispose occurs during the ConnectAsync operation, it won't end up disposing the socket being used to make the connection, such that the connection won't be canceled.
2. On all platforms, Dispose nulls out the client socket field.  When the connection then subsequently completes, it hits a NullReferenceException while trying to dereference that field.

This commit addresses both issues:
a. When the client is disposed, on Unix we cancel a CancellationTokenSource, and each Socket we create is registered with that source to dispose the socket.  That way, we dispose of each socket even if it hasn't been published onto the instance yet.
b. We grab the Socket from the field and check for null prior to dereferencing it.

Commit migrated from https://github.com/dotnet/corefx/commit/e3e7ca7630c486f35bf7eac330dedcf729c74e71

Ensure Unix SslStream sends intermediate CA certs when required. (dotnet/corefx#9814)

Commit migrated from https://github.com/dotnet/corefx/commit/02ea17c713e8c67c98cced71731a72c724e26135

Merge pull request dotnet/corefx#9960 from Priya91/test

Fix caching in RuntimeInformation.

Commit migrated from https://github.com/dotnet/corefx/commit/8657ed38162d63419a9a7f8531a99ee5a263fc31

Merge pull request dotnet/corefx#9962 from dotnet-bot/UpdateDependencies20160711061952

Updating External dependencies to beta-24311-00

Commit migrated from https://github.com/dotnet/corefx/commit/e3d7749fc10ad28b03f71521c8a90ab32175342c

Updating CoreFx dependencies to beta-24311-02

Commit migrated from https://github.com/dotnet/corefx/commit/72696340840e514ffdd98a8713c9b8079d2effcb

Updating External dependencies to beta-24311-00

Commit migrated from https://github.com/dotnet/corefx/commit/e0bc4edd26dcb4f208c0ed138c875a8935ac0f9b

Merge pull request dotnet/corefx#9961 from Priya91/fixgroovy

Skip running arm jobs in PR.

Commit migrated from https://github.com/dotnet/corefx/commit/3c7ecb4eb50a010d44b6ff14c9b19c3d5a25a0ac

Skip running arm jobs in PR.

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

Fix caching in RuntimeInformation.

Commit migrated from https://github.com/dotnet/corefx/commit/12cf3c411aecd548a5048080e94458386dd01c5f

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