More build file updates

Make Microsoft.Build.Tasks.CodeAnalysis an independent DLL

The code is separated out and can compile now.  Had to break server functionality to enable this though.

Don't deploy extensions in Jenkins runs

Fix casing issues in SemanticModel.vb

Ensures cached lambda has matching return type for UnboundLambda binding

More build changes and enforcement

* escape pr title

* Revert "Removed the pull request title from the perf run tests, as it isn't correctly escaped. This addresses #14480."

This reverts commit 1733a086.

* add "do" to for loop

* parse line-by-line and quote correctly

* another attempt at escaping

* attempt without sanitization

* Switch escape mechanism

Remove unnecessary type parameter from SymbolDisplay base type.

add test for symbol on result of typeof

Fix regression that caused us to not update hte builder text as the user typed.

In order to have predictable builds a solution needs to include the transitive closure of projects.  Lacking that reachable projects not directly included in the solution will not get defaults set on the command line.  This change enforces we have the transitive closure included in scanned solutions.

Remove dependency on VSWorkspaceImpl and project guids in FAR.

Cached lambdas were being used in situations where the return type was
different. This forces building a new lambda body and binding for those
cases.

Merge dev15 rc into master20161026 150038

Note unused field definitions in abstract classes

* Skip enclosing parens in ancestors to find the when clause of a switch case
* Adjust instrumentation for when clause to include the when keyword
Fixes #14707 

BuildBoss updates