[libclang] Indexing API: Fix suppressing of references in macros and suppress
@class forward references.

rdar://10568080&10568103&10568119

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146496 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed