Patch to allow mangling of microsoft’s __uuidof expression for the Itanium ABI 
when under -fms-extensions. Reviewed by John McCall.
//rdar://17784718


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218384 91177308-0d34-0410-b5e6-96231b3b80d8