Objective-C arc. Switch the Objective-C dictionary literal in ARC mode
to use non-retain/autorelease API variants of ObjC objects. wip.
rdar://17554063


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@215146 91177308-0d34-0410-b5e6-96231b3b80d8