When -fmodule-format is set to "obj", emit debug info for all types
declared in a module or referenced by a declaration into the module's
object file container.

This patch adds support for C and C++ types.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@247049 91177308-0d34-0410-b5e6-96231b3b80d8