mkarchiso: cleanup opts, user dir creation
mkarchiso: cleanup opts, user dir creation

As in title, this patch cleans up opt flags that exist for no reason and
adds additional flags to modify the disk meta info which would otherwise
be hardcoded.

I wasn't quite sure about the user directory part but it doesn't seem
like a good idea to put that part into the script and therefore I
commented it out. It would probably interfere with rc.local scripts that
take care of skel copying. I replaced the part after the TODO with a
safe guard to make sure that people who are not aware of the changes
will not be caught by surprise.

Signed-off-by: Aaron Griffin <2851cfca19e1ca9596fe7f146f11c69a7d81b341@gmail.com>

dock0/dock0