libpng 1.4 slot fix
Merge branch 'master' of github.com:hadronproject/hadron64

	renamed:    ../../dev-libs/libusb-compat/libusb-compat-0.1.4.py -> ../../dev-libs/libusb-compat/libusb-compat-0.1.4-r1.py
	deleted:    ../../dev-libs/libusb/libusb-0.1.12.py
	deleted:    ../../dev-libs/libusb/libusb-1.0.8.py
	deleted:    ../../dev-libs/libusb/libusb-1.0.9.py
	renamed:    ../libdc1394/libdc1394-2.1.3.py -> ../libdc1394/libdc1394-2.1.3-r1.py
	renamed:    ../../net-print/cups/cups-1.5.0.py -> ../../net-print/cups/cups-1.5.0-r1.py
	renamed:    ../../sys-fs/udev/udev-195.py -> ../../sys-fs/udev/udev-195-r1.py
	renamed:    ../../sys-power/upower/upower-0.9.14.py -> ../../sys-power/upower/upower-0.9.14-r1.py