Add a basic project for Eclipse. It requires that ant be run first to make
gensrc and jarjar, though that could probably be fixed by some intrepid work
with the External Builder. It also requires an ANT_HOME variable to be defined
as the directory where ant is installed.
It excludes the Informix and Oracle classes from the build since they aren't
included by default in extlibs, but they'll still be built by ant if you have