Jails as created on cobus.

-	create.sh

	one off creation of disk images and directory

-	gen.pl

	one off addition of rc.conf

-	fstab-extra

	add to fstab

-	create jail-base with some sensible
	copy - see man jail. If needed boot into
	it to set it up generic enough.

-	create a directory jail-base-ro for the unionfs -- see 
	comments in fstab-extra.