Remaster script: support xz squashfs

01micko posted a patch for /usr/sbin/remasterpup2, to support xz compression of sfs files:
http://murga-linux.com/puppy/viewtopic.php?p=623475#623475

Thanks to scsijon who posted a link to that patch.

Woof commit:
http://bkhome.org/fossil/woof2.cgi/info/8cb34303da

Tags: woof