Handle mixed-OS paths in DWARF reader

Make sure that DWARF line information generated by Windows can be properly read by Posix OS and vice versa.

Differential Revision: https://reviews.llvm.org/D44290

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@327430 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed