build.xml now actually builds the code.  also works now in linux.
you need to make dlls executable, or you'll get an unsatisfied link exception
linux version of JRift found here:  https://github.com/mabrowning/JRift/
linux libraries found with worldwind.
the other versions of glugen and jogl found within WorldWindVR.zip.
Merge pull request #2 from arichnad/master

Some changes necessary to get things working on linux.