freebsd 3 support

[Kip Macy]

It has come to my attention that Xi Graphics and VMware's X servers rely
on FreeBSD 3 compatibility. I may be completely alone in this regard,
but I have a number of computers with graphics cards that aren't
supported by FreeBSD's XFree86 and hence the only way to run
FreeBSD/Dragonfly + X on them is using one of the above 2 X servers.
Hence, it might make sense bring the old signal code back in.


					-Kip