Implement declaration merging for Objective-C protocols across
multiple, disjoint modules. There is far too much duplicating with the
ObjCInterfaceDecl case here, which I'll eliminate shortly.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147417 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed