PC-card ready FreeBSD installation floppy

This is the patch to make PC-card ready installation (and fixit) 
floppy for FreeBSD 2.1.0-RELEASE.  etc.patch is the patch to 
/usr/src/etc and release.patch is the patch to /usr/src/release.

Binary distribution of these floppies can be found at:
ftp://bash.cc.keio.ac.jp/pub/os/FreeBSD/alpha-test/pccard-flp/

This patch is not complete patch, and it has following problem.

1. It forces to incorporate PC-card ready sysinstall into normal 
   boot.flp (but I think it causes no problem for installation
   because it won't copy /etc/pccard.conf into normal boot.flp 
   and sysinstall doesn't try to enable PC-cards if it can't find
   pccard.conf).

2. It crunches pccardd and pccardc into normal fixit.flp.

HOSOKAWA, Tatsumi <hosokawa@mt.cs.keio.ac.jp>
