it is optional and doesn't replace the existing mail task.  The main
improvement is that it supports attachments you can specify via a
fileset.

Submitted by:	 Glenn Twiggs <glenn_twiggs@bmc.com>
                 Steve Loughran <steve_l@iseran.com>
                 Erik Hatcher <erik@hatcher.net>
                 Paulo Gaspar <paulo.gaspar@krankikom.de>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269321 13f79535-47bb-0310-9956-ffa450edef68