Restore test files accidentally deleted in r354839

I think there must be a bug in git-llvm causing parent directories to be
deleted when the diff deletes files in a subdirectory. Perhaps it is
Windows-only.

There has been a behavior change, so some of these tests now fail. I
have marked them XFAIL and will fix them in a follow-up to separate the
changes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@360699 91177308-0d34-0410-b5e6-96231b3b80d8
75 files changed