[Diffusion] rL250657: Support linking against OpenMP runtime on FreeBSD.

[Tom Stellard via cfe-commits]

tstellarAMD added a project: 3.7-release.

Users:
  dim (Author)
  3.7-release (Auditor)
  cfe-commits (Auditor)
  tstellarAMD (Auditor)
  joerg (Auditor)
  rsmith (Auditor)

http://reviews.llvm.org/rL250657