The main identicon code is here.
The webapp example code is in ../imagegen and adopted for our use.
There are minor modifications to remove dependencies on commons-logging
and the org.cache2k package.
We've added a build.xml for ant.

Pulled from https://github.com/PauloMigAlmeida/identicon on Jan. 4, 2016,
rev 96902d3c7c9733d9da4cce9c5ed424557fc2ec3c dated April 10, 2015.
