Update the mangler for some of the "new" unresolved-name manglings.
I've sent off an email requesting clarification on a few things that
I wasn't sure how to handle.

This also necessitated making prefixes and unresolved-prefixes get
mangled separately.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130083 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed