message: restore the script to include all 4 compilers on toss 3
diff: @@ -24,9 +24,10 @@ def main():
  # write info about this build
  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",
  - specs = ["%gcc@4.9.3",
  + specs = ["clang@3.9.0",
  + "%gcc@4.9.3",
  "%intel@16.0.4",
  "%intel@17.0.0"]
  # use uberenv to install for all specs
  