JOAL audio backend
Merge pull request #1 from xranby/master

Add tests/gdx-tests-jogl
Fix backends/gdx-joal/.project projectDescription name

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>
Use gdx-joal for gdx-backend-jogl

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>