[modules] When merging a tag declaration that has a typedef name for linkage
purposes, look for other typedefs with that same name and merge into their
named tag declaration if there is one.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216312 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: Skip unnamed bitfields when handling designated initializers

We would accidently initialize unnamed bitfields instead of the
following field.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216313 91177308-0d34-0410-b5e6-96231b3b80d8