ObjectiveC migrator. Please annotation of properties with 
NS_RETURNS_INNER_POINTER under -objcmt-returns-innerpointer-property
flag (off by default), as older compilers do not support such annotations.
// rdar://15396636


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194100 91177308-0d34-0410-b5e6-96231b3b80d8