Further downgrade -Warc-bridge-casts-disallowed-in-nonarc to a warning (not mapped to an error).  We can consider mapping it back to an error later.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149670 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed