Some boot-time messages were obnoxiously long because
they used "old-style" diagnostics.


OSDL bugid 481

Get rid of most remaining "old style" diagnostics from usbcore.
Most messages use driver model style diagnostics.  Messages that
don't have an associated device use the standard kernel printk
wrappers and label themselves as from "usbcore".  (Except that
there's no such wrapper for KERN_ERR.)

This doesn't touch usbfs, "config.c" (Alan's patches do this), or
usb_reset_device() (needs a more substantial overhaul).  Or any
other USB drivers (notably HID).