message: clang3.9.0 is missing %
diff: @@ -25,7 +25,7 @@ def main():
  write_build_info(pjoin(prefix,"info.json"))
  # spack specs for the cz chaos systems
  #specs = ["%clang@3.9.0",
  - specs = ["clang@3.9.0",
  + specs = ["%clang@3.9.0",
  "%gcc@4.9.3",
  "%intel@16.0.4",
  "%intel@17.0.0"]
  