Convert "#pragma unused(...)" into tokens for the parser.
This allows us to cache a "#pragma unused" that occurs inside an inline C++ member function.
Fixes rdar://8829590&8770988.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123666 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed