ObjectiveC migrator. Modify inferred property name
such that it does not lower case the staring property
name if getter name (after "get" prefix) starts with 
two upper case letters.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190539 91177308-0d34-0410-b5e6-96231b3b80d8