Updating VB Tests

Fixing Mef composition error caused by previous commit
(11a827c4)

force error list update when we find snapshot becomes out of sync

The common parts of the compiler were attempting to deduce the directory
of the compiler exe by using various reflection / assembly APIs.  This
is a fragile method that is easy to break in unrelated code.
Additionally this API is not available on CoreFx.

The fix is to simply thread the compiler exe path through from the Main
methods on the EXE.

closes #1705

Don't report any locations in the error log file for diagnostics with Location.None. Fixes #1582 

Remove some unncessary usings in v1 Diagnostic incremental analyzer.

Retry compilation of ambiguous expression using assemblies directly referenced by the current module only

Retry expression compilation if there are ambiguous types, retrying with a compilation that drops all assemblies that aren’t directly referenced in the current module. Retry occurs at most once. If there are errors on retry, the errors from the original compilation are reported instead. The compilation from the retry does not change the cache.

Replaces PR #1434 

Fix typo: teh -> the

Fix timestamp written to Debug Image Directory

Use MetadataReader to extract analyzer display names.

[EnC] Fix ArgumentException in SymbolMatcher

Fix CodeFixService.GetProjectDiagnostics to handle compilation end diagnostics. Currently it was just force computing all document diagnostics, not the project diagnostics, which executes the compilation end actions.

Additionally, also fix the BatchFixAllProvider to correctly handle compilation end diagnostics.

Fixes #247 

Fix CodeFixService.GetProjectDiagnostics to handle compilation end diagnostics. Currently it was just force computing all document diagnostics, not the project diagnostics, which executes the compilation end actions.
Additionally, also fix the BatchFixAllProvider to correctly handle compilation end diagnostics.

closes #1692

CR feedback: cast to (object) for reference equality

Made a number of small changes to enable building on CoreFx

- Remove uses of MemoryStream::GetBuffer.  This API isn't supported on
CoreFx. The TryGetBuffer is available but in these cases seemed better
to just call Stream::CopyTo
- Changed Type.Assembly to Type.GetTypeInfo().Assembly
- Moved scripting APIs out of CommonCompiler and into
ScriptCompilerUtil.  These methods relied on APIs that are not available
on CoreFx and have no equivalent.
- Minor API updates.

Report code fix exceptions to the user. fixes #268 

Adding test for the refactorings get preview functionality

Jenkins should use the full Roslyn.sln

For a newly added type, there is no match in the previous generation but we were still looking for its match in some cases like array, type arguments and pointer. This fixes issue #1533.

Unify Decimal helpers accross C# and VB

XML schema validation is not available on core clr and hence can't be in this
particular layer of the compiler.  Instead moving to the manual validation of the
small amount of data required for this rule.

closes #1687