Bugs found in the distribution
1) MGR crashes on startup on SUNOS-4.0
	- fixed src/blit/bitmap.c
2) src/kbd.c uses wrong include file for SUNOS-4.0
	- fixed include
	- fixed missing #else for no -DKBD option
3) user manual doesn't make 
	- fixed doc/usrman/Makefile
4) Wrong heading on font(5) man page
	- fixed doc/font.5
5) The files misc/mgrc and misc/login are missing
	- they've been added.
