4.4BSD snapshot (revision 8.1); add 1993 to copyright

declare u_pop_n_swap

some lint, some bug fixes, ^C handling improvements
multiple access methods back in (yeeech!)
new version from Rodney Ruddock (rodney@snowhite.cis.uoguelph.ca)

date and time created 93/02/28 14:53:24 by bostic