(parse_ls_color, usage): Remove support for alternate spellings:
treec94c8c6b9c300c737c8d20fd381ac5adbb51391a
-rw-r--r-- 10887 ABOUT-NLS
-rw-r--r-- 17996 COPYING
-rw-r--r-- 7722 INSTALL
drwxr-xr-x - doc
drwxr-xr-x - lib
drwxr-xr-x - old
drwxr-xr-x - po
drwxr-xr-x - src
drwxr-xr-x - tests