(/dev/urandom used by default under FreeBSD), and implemented a
"portable" but less secure generator for other systems.
Add display of expiry/password change dates in -P user display.
sysinstall's new User&group menu will use it, hence it's a 2.2
candidate despite of providing new functionality.
Submitted by: David L. Nugent, <davidn@blaze.net.au>
