* update manpage

* Eliminate all the separate definitions of targetdir, mirrordir

 * config option to copy files from existing fs

 * remastering hints such as http://www.knoppix.net/docs/index.php/KnoppixRemasteringHowto

 * finish docs

 * [config] user-specified args for cdebootstrap

 * [config] user-specified mkisofs args

arch-tag: to do list