documentation parsing: patch to make @class work for
class templates; and similarly, @function  works for 
function templates. // rdar://14124702


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184329 91177308-0d34-0410-b5e6-96231b3b80d8
Corrections to r184205 ('this'-return optimization) due to the wrong version of the patch being committed originally.
1) Removed useless return value of CGCXXABI::EmitConstructorCall and CGCXXABI::EmitVirtualDestructorCall and implementations
2) Corrected last portion of CodeGenCXX/constructor-destructor-return-this to correctly test for non-'this'-return of virtual destructor calls


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184330 91177308-0d34-0410-b5e6-96231b3b80d8
Enhancements for the DynTypedNode

Added ASTNodeKind as a standalone way to represent node kinds and their hierarchy.
This change is to support ongoing work on D815.

Reviewers: klimek

CC: cfe-commits

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184331 91177308-0d34-0410-b5e6-96231b3b80d8