Update TestRunner.cs to properly create the parent directory instead of a directory with the file name.

Updating the TestRunner to always create the log folder.

Updating TestRunner to sort unit test assemblies by size.

Fix formatting of omitted arguments on their own line

Updating RoslynSemanticVersion to 1.2

Allow simple property assignments in expression tree lambdas in VB

made unused usings code fixer to consider all contexts

Add outdir parameter to BuildNuGets.csx

* stabilization:
  Adding back in a character removed in an earlier fix.

When renaming a VB form, cascade to the synthesized compiler "My" property for the instance of the form.

Fixes #4517

Updating the other instance of AssertDebugException in RealParserTests to only be used in Debug mode.

Added pathmap to msbuild options

Follow the CommonWith pattern in compilation options

Supply CodeBases for binding redirects

Stop assuming previous submission aliases have been resolved

Real parser

Fix text color copied from interactive window

Fix typo in summary comment

Old vbc compiler used to allow property assignments (even though technically no assignemnets should be allowed)
This fixes #4524

Caveat: old compiler also allowed compound property assignments like += and generated bad code for them

We are not going to allow that unless some major use patters are discovered.
It is generally not possible to implement that correctly using ExpressionTrees v1.0 node set.

fixed null exception

made CS0067 another build only error

moved Diagnostic usage to DiagnosticData in workspace layer