new USB stack

[Robert Huff]

	[I'm suscribed, but please CC: anyway.]

	According to UPDATING:

20081009:
        The uhci, ohci, ehci and slhci USB Host controller drivers have
        been put into separate modules. If you load the usb module
        separately through loader.conf you will need to load the
        appropriate *hci module as well. E.g. for a UHCI-based USB 2.0
        controller add the following to loader.conf:

                uhci_load="YES"
                ehci_load="YES"

	I'm about to upgrade a machine where USB is compiled into the
kernel, and want to confirm no changes are needed to:

device		uhci
device		ohci
device		ehci
device		usb
device		ugen
#device		uhid
device		ukbd
options		KBD_INSTALL_CDEV
device		ums

	in $KERNCONF.

	Respectfully,


				Robert Huff