Refine vtable pointers for secondary vtables inside VTTs to point to the right base vtable.  WIP.
Refine vtable pointers for secondary vtables inside VTTs to point to
the right base vtable.  WIP.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@87039 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang