Fixes files used as input when pre-processing MPL-containers in their variadic form.

def fix_input_files_for_variadic_seq(headerDir, sourceDir, timestamp):
    """Fixes files used as input when pre-processing MPL-containers in their variadic form."""
    # Fix 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 ):
        fix_header_comment( currentFile, timestamp )