Add aegis 4.16:

Aegis is a transaction-based software configuration management system.
It provides a framework within which a team of developers may work
on many changes to a program independently, and Aegis coordinates
integrating these changes back into the master source of the program,
with as little disruption as possible.

Author: Peter Miller <millerp@canb.auug.org.au>
WWW: http://aegis.sourceforge.net/

PR: ports/54060
Submitted by: vance@aurema.com