Implement a more sensible strategy for ObjC built-in types (addressing a long standing FIXME in Sema::GetObjcIdType()).

This removes several gross hacks to work around the previous "lazy" behavior.

Two notes:
- MinimalActions still needs to be taught about the built-in types (This breaks one of the -noop test cases). I started this, then added a FIXME.
- I didn't convert Sema::GetObjcProtoType() yet.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43567 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed