engine

engine
- created a FilterParmeter annotation to use reflection (java.util.reflection) to display filter's properties in the editor
- using WaterFilter() empty constructor will now use the first scene of the viewport as the reflection scene (the water reflection), and use the direction of the first directional light found in this scene.

git-svn-id: http://jmonkeyengine.googlecode.com/svn/trunk@7757 75d07b2b-3a1a-0410-a2c5-0572b91ccdca