vipw was hanging on stop signals
From: Charles Hannum <mycroft@NetBSD.ORG>

add 1994 copyright

prettyness police

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

Set the close-on-exec bit so that users can't get at the
encrypted passwords while editing.

unlimit stack, data, rss; ignore SIG{ALRM,PIPE,TTOU}: sheer paranoia

ignore the signals, don't just block them.

make pw_edit fail for good when it fails; don't wait for db lock

rework the password subsystem
date and time created 91/02/12 21:34:43 by bostic