Build Firefox with clang
|Reported by:||DJ Lucas||Owned by:|
Have had a report of issues with GCC-7 on firefox. Workaround is, of course, to relax the opts to -O2 (in the book). Was noted by darklink in IRC that using clang provides a working build as well. Since clang will already be required for rustc, suggest looking into using it for the FF build as well. Thought?