* Fix xfce and default config directories. * Add lots and lots of help to the grub menus... also add the graphics to all submenus * possible auto-detection of installed systems via nifty grub tricks? * Switch to squashfs-lzma * Add 'needsupdate' function to check if a squashfs image in the iso dir is up to date, if so, skip it; else rebuild it. No more need for the -f flag * Remove the need for the -f flag overall. We should be able to do all this intelligently * Make the bootloader flag work with usb images too