…ngs and minor optimizations (e.g. StringBuilder from pool)

…is in a common base class).

* Added glyph to completion item
* Added type info test for InternalsVisibleToAttribute (SemanticModel) including test
* Added support for three out of four ways to strong name an assembly:
  *  By csproj property *AssemblyOriginatorKeyFile* (was already supported)
  *  By compiler option (was already supported)
  *  By *AssemblyKeyFileAttribute* and *AssemblyKeyNameAttribute* (new, requires compilation of every assembly). Test case added.
  *  Not supported: By Assembly Linker (IMO not possible)
* Added test for delayed signing

…in the appropriate places (found a weird edge case).

* Changed semantic check and removed check of the attribute name (and added test for type alias)
* Code cleanup as reviewed

…mpilerOptions".

…s. Some more minor changes.

…g tests.

…letion list (because syntaxFactsService.IsElementAccessExpression is called in GetAttributeSyntaxNodeOfToken)

…already "InternalsVisibleTo" by looking up of InternalsVisibleTo attribute instances of the current project.

…fic syntax trees directly instead by visitor pattern.

…n the wrong document

…lsVisibleToAttribute method

* Full Windows PDB determinism

* Update DSRN to 1.7.0-private-25621

* Avoid caching zero chunks

* PR feedback

* Use DSRN version 1.7.0-beta-25631

* Fill in missing document entries in PDB tests

* Update pdb to xml converter to 1.1.0-beta1-62106-02

added more diagnostic info on OOP code.

- Fixed variable typo in all files I could find it in

InternalsVisibleToCompletionProvider

fixing merge break: adding document attribute to pdb in broken tests

Avoid AggregateException in TaskExtensions.WaitAndGetResult

… full actual result. (dotnet#21336)

…21963)

21898 - Fixed typo in help message

The testing instructure for CoreCLR currently runs all assemblies in
parallel in a single process, so resources, which are static and lazy
initialized, must have thread synchronization. Otherwise, tests which
depend on object or symbol identity could fail if they retrieve
different copies of the same resource.

Fixes dotnet#21937

Fix issue with merging parameters

…r-20170908-070011

Merge dev15.4.x to master

…aster.