libusb: add from /packages, add myself as maintainer

git-svn-id: svn://svn.openwrt.org/openwrt@35373 3c298f89-4303-0410-b956-a3cf2f4a3e73
usbutils: add from /packages, clean up, add myself as maintainer

git-svn-id: svn://svn.openwrt.org/openwrt@35374 3c298f89-4303-0410-b956-a3cf2f4a3e73
move a few packages to system/utils

git-svn-id: svn://svn.openwrt.org/openwrt@35375 3c298f89-4303-0410-b956-a3cf2f4a3e73