Prevent the first maintenance script rule from running if no target is specified...
drwxr-xr-x - Bootloaders
drwxr-xr-x - BuildTests
drwxr-xr-x - Demos
-rw-r--r-- 81961 LUFA.pnproj
drwxr-xr-x - LUFA
drwxr-xr-x - Maintenance
drwxr-xr-x - Projects
-rw-r--r-- 2351 README.txt
-rw-r--r-- 748 makefile