sshfs-mapper: Miscellanous help fixes.

* Added help for the -a option
 * Fixed bad column alignment.
 * Added precisions for the -u option.


git-svn-id: https://websvn.glenux.net/svn/Upoc/sshfs-mapper/trunk@1428 eaee96b3-f302-0410-b096-c6cfd47f7835

sshfs-mapper

@@ -60,8 +60,9 @@ Usage: `basename $0` [options]
 -h  Show this help and exit.
 -i  Initialize user configuration.
 -l  List available maps.
+-a  Use all maps.
 -s  Only use specified map.
--u	Umount user maps.
+-u  Umount user maps (mount if not specified).
 EOF
 exit 1
 }