Objective-C arc [Sema]. Allow bridge cast of a qualified-id expression
when bridged Objective-C type conforms to the protocols in CF types's
Objective-C class. // rdar://16393330


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@205659 91177308-0d34-0410-b5e6-96231b3b80d8