[analyzer] Fix an infinite recursion in region invalidation by adding block count to the BlockDataRegion.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195174 91177308-0d34-0410-b5e6-96231b3b80d8
Comment parsing tests: introduce a little more structure in testcase


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195176 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC ARC. validate toll free bridge casting
to or from 'id' and qualified-id types.
// rdar://15454846


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195178 91177308-0d34-0410-b5e6-96231b3b80d8