Bump JogAmp to v2.0.2-rc12
Adapt to JOGL/NEWT Changed up to v2.0.2-c12 ..

- NEWT ScreenMode -> MonitorMode
- NEWT Window: Don't issue Game.Quit() if already in shutdown (could be screen mode change)
- NEWT KeyEvents: No keyTyped, adapt to new KeyCodes.
Ant build.xml: Build target is 1.6; Pick up TARGET_RT_JAR (-> JRE 1.6 rt.jar); Respect javacdebug* props, def. is none.
Fix Window destroyNotify() -> QUIT