PR4063, with feeling: Chain PP callbacks by default.
 - This is somewhat cleaner and also fixes PR4063 for real, I had the
   order wrong so we were just creating an empty dependency file.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70687 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed