code: def check_input_files_for_variadic_seq(headerDir, sourceDir):
      
      # Check input files in include/source-directories.
      files  = glob.glob( os.path.join( headerDir, "*.hpp" ) )
      files += glob.glob( os.path.join( headerDir, "aux_", "*.hpp" ) )
      files += glob.glob( os.path.join( sourceDir, "src", "*" ) )
      for currentFile in sorted( files ):
          if check_header_comment( currentFile ):
              return True
      return False
docs: Checks if files, used as input when pre-processing MPL-containers in their variadic form, need fixing.