Improve crash reporting test coverage.

This adds validation that the
* repro source is only rewrite-includes processed, not fully preprocessed.
* repro script contains macro definitions (-DFOO=BAR).

Based on suggestions/help by Matt Beaumont-Gay.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159605 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed