incomplete and likely has problem. The code was originally pcmcia,
but I renamed it to pccard and made it compile on FreeBSD -current. I
converted SIMPLEQ to STAILQ as well as a few sc->dev.xname ->
device_printf changes. This is a green port of fairly mature code.
I derived this work from the FreeBSD newconfig project
(http://www.jp.freebsd.org/newconfig). Any problems with it are
likely introduced by me.
Obtained from: newconfig project
