* Update projects for Preview 5

* Add test to embedd a pdb and also do a better job of building on preview 4 and below dev 15 previews.

* alternate version detection

* Embed test failed on success .... fix it

* clean up from prior failures for embedded test

* don't modify output name for embedded testcase

* Minor refactor of writePortablePdbInfo

* Add command line switches for embedded pdbs

* Embed PDBs in the .exe

* Enable embedded portable pdbs

* Update fsharp.build.dll to understand embedded

* Clean up

* Move BinaryChunk to ilwrite.fsi

* Revert "Move BinaryChunk to ilwrite.fsi"

This reverts commit 992aa7a944ed62b7aae93311f030278d16a99d29.

* Use List.exists for contains

* ListSet.contains is List.exists

* Revert "ListSet.contains is List.exists"

This reverts commit dc41206f8ffd4ef047ade0eaf1ae200900609b11.

* Adding qualified reference to Microsoft.FSharp.Primitives.Basics again

* cleans up array as well

Race Conditions in FSharp.Core

Update nuspec for FSharp.Compilerto point to shipped system.valuetuple

accidently changed form int64 to int when fixing locking issue

tables.Add is called from within a lock, so presumably this code has
been written to attemp to be thread safe, thus tables.TryGetValue must
also be protected by lock

lastStamp was assigned to stamp outside the lock, which could have meant
that stamp was assigned the same value if multiple threads were creating
Var objects simultaneously. Moved it into a function to ensure access
was limited to Interlocked function.

[WIP] Alternative Array.Filter implementation

Fix portable pdb debugging

- Small and large array edge case optimizations included
- Broke functionality into multiple functions

Deploy correct dependencies for the compiler

Better error message when specializing generic abstract type with unit

Cleanup QuickParse.fs

Pretty Print Value of Public Fields in FSI

Update System.ValueTuple in templates to the official public pre-release. 

Fixed binary reader error message

[WIP] Adding extra detail to error messages

Cleanup printf

1. Update System.ValueTuple in templates to the official public pre-release.  2. remove a couple of reference tests that were flaky on many platforms due to a dependence on specific VS installation options.  3. Update a test that was relient on an installation of .Net 2.0