Shutdown hook imp

I've attached a zip of diffs for the jdbc drivers to implement the
shutdown hook.  Someone who knows ant has to modify what I did so it
only builds in jdk 1.3+

I wasn't able to build this and check if it works (something about the
way things are in the cvs tree snapshot I was working out of) but the
java files are free of syntax errors.

--
Joseph Shraibman
jks@selectacast.net
Increase signal to noise ratio.  http://www.targabot.com