Unify VS Setup

Lazy doc comments for signature help

Made the retrieval and parsing of XML documentation comments for signature help items lazy. This saves allocations and CPU time for operations such as typing within methods like Console.WriteLine (which has 19 overloads)

Also, cache the result of the last XML fragment parse (since we often ask to parse the same fragment over and over)

Add regression test for Issue #62

Fix malformed XML doc comments

Fixed a NullReferenceException introduced by the last commit (range
validation)

Use compact property getter syntax.
Added range checking to Signature's constructor.

Fix doc comment typo. 

Automated checkin: update Concord binaries from \\cpvsbuild\drops\dev14\VSPro_1\raw\22606.00 to version 22613.00.

Update debugger API files.

add bare minimum implementation of diagnostic analyzer that uses compiler analyzer driver

fix COM interface definition

This change moves the contents of VisualStudioSetup into the open,
merging with (and consuming) VisualStudioComponents. The Components/
Setup split originally existed as a way to allow multiple Roslyn-using
components to have a single source of truth of the MEF exports. This
meant you could have either the interactive window, language services,
or both installed and everything worked. This was important when we
were atop Visual Studio 2013, but now that we're integrated it's buying
us nothing.

The VSIX ID from VisualStudioComponents is preserved so that way any
extensions that declared a dependency on it will still work.

Fix warning CA2002: Do not lock on objects with weak identity

Typo in SyntaxAnnotation class description

[Workspaces] DocumentInfo never set IsGenerated value

Remove files related to debugger binary patching - they don't make sense...

Emit XML output in Jenkins

Local and iterator scope ranges

Add a context menu item to open diagnostic help links

it looks like when we move to GitHub, we manually declared some COM interface defined in VS in roslyn code base and when we do that, we put methods in wrong order.

made it to match order of methods in idl.

Reduce the amount of work done in the pattern matcher.

Use a Func<IEnumerable<SymbolDisplayPart>> to represent the 'getter' for Documentation in SignatureHelp and thread that through the entire sig-help implementation.

rename some of method to more clearly indicate what can be cached in manager and what must be cached by caller.

GetXXX method is used for information that manager can cache or already cached. CreateXXX method is used for information that manager can't cache.

fixed typo and removed stale comments

Set VSSDKTargetPlatformRegRootSuffix