Patch for sysinstall wrong-disc problem

Hey folks,

I've come up with a patch that fixes sysinstall prompting for the wrong CD
when trying to install packages from non-CDROM media.  Patch is here:

http://people.freebsd.org/~dwhite/patches/index.c.20050618.patch

This makes the "This is disc#0; I need disc#1" type message go away by
checking if the install media is a CDROM first.  Tested with an install
over NFS, but it shouldn't make a difference what install media as long as
its not a CD.

I'll commit this shortly if there are no objections.

Thanks!

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite_at_gumbysoft.com          |  www.FreeBSD.org