Clean up, add some documentation, and make this test return to checking
the linker toolchainness a bit more thoroughly. It used to work this
way, but hit buildbot issues. Hopefully subsequent fixes have addressed
those problems, but I'll be watching the bots.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151090 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed