[efi] Add %.usb target for building EFI-bootable USB (or other) disk images
-rw-r--r-- 558 COPYING
-rw-r--r-- 18092 COPYING.GPLv2
-rw-r--r-- 2931 COPYING.UBDL
-rw-r--r-- 113 README
drwxr-xr-x - contrib
drwxr-xr-x - src