message: fixed setup.py to run with python2/3
diff: @@ -21,10 +21,7 @@ def get_global_dir(files):
  def get_mpi_flags():
  # Split the output from the mpicxx command
  - args = check_output(['mpicxx', '-show']).decode('utf-8').split()
  -
  - # decode strings to utf-8 (for Python 3 to avoid bytes literals)
  - args = [x.decode('utf-8') for x in args]
  + args = check_output(['mpicxx', '-show']).split()
  # Determine whether the output is an include/link/lib command
  inc_dirs, lib_dirs, libs = [], [], []
  