[Windows] Fix __declspec(property) when the getter returns a ref

This fixes an issue when parsing atlbase.h.

Patch by Will Wilson!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184319 91177308-0d34-0410-b5e6-96231b3b80d8
Adding everything from our previous feature branch into the new branch.
Merge branch 'working' of https://github.com/AaronBallman/tra-working into working