Fiat lux

Sky is the current topic.
Add SkyDome and SkyBoxTexture

This is a cube map texture for the sky dome.

--HG--
rename : src/sed/SkyDome.java => src/sed/sky/SkyDome.java
Set hgignore
Complete and working sky sphere
Consolidate updatePosX/NegX functions into updateX with flags
Hardened SkyDome, now with indices

- MathExt (1:1 copy from SSim) is needed
- remove warning from Sky.j3md
New SkyAppState encapsulates SkyDome behavior

Nice concept of jME for factoring out independent pieces of code that can be thought of a mixin of functionality for the final scene.
Need log4j to smoothly implement SSim source code
Take SSim's SimClock for core timer
Add Eclipse formatter and code templates
Applied Eclipse formatter

Tabs -> spaces etc
Rename project
Split after margin 80 chars
Prepare assets/Shaders rename

--HG--
rename : assets/Shaders/Sky.frag => assets/shaders_tmp/Sky.frag
rename : assets/Shaders/Sky.j3md => assets/shaders_tmp/Sky.j3md
rename : assets/Shaders/Sky.vert => assets/shaders_tmp/Sky.vert
Rename assets/Shaders into assets/shaders

This won't happen again, thank you.
Update Eclipse code templates
Exclude direct jME3 dependency from .classpath

Now there should be an jME3_xy user library defined in Eclipse!
Add XML loader for jME3 asset loader architecture
Update hgignore
Add vecmath dependency