Document the presence of the new Objective-C++ mangling for qualified-id.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192670 91177308-0d34-0410-b5e6-96231b3b80d8
Correctly skip type sugar when determining the width of an enum type. Derived
from a patch by Justin Bogner.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192671 91177308-0d34-0410-b5e6-96231b3b80d8