some changes
	deleted:    eZLib/src/eZLib/EulerAngles.java
	modified:   eZLib/src/eZLib/Geometry.java
	new file:   eZLib/src/eZLib/Math/Er.java
	renamed:    eZLib/src/eZLib/Matrix4.java -> eZLib/src/eZLib/Math/M.java
	new file:   eZLib/src/eZLib/Math/Q.java
	new file:   eZLib/src/eZLib/Math/Ut.java
	renamed:    eZLib/src/eZLib/Vector.java -> eZLib/src/eZLib/Math/V.java
	renamed:    eZLib/src/eZLib/CylindricalVector.java -> eZLib/src/eZLib/Math/Vc.java
	renamed:    eZLib/src/eZLib/SphericalVector.java -> eZLib/src/eZLib/Math/Vs.java
	modified:   eZLib/src/eZLib/Physics/Body.java
	modified:   eZLib/src/eZLib/Physics/FluidResistance.java
	modified:   eZLib/src/eZLib/Physics/Force.java
	modified:   eZLib/src/eZLib/Physics/Friction.java
	modified:   eZLib/src/eZLib/Physics/Gravitation.java
	modified:   eZLib/src/eZLib/Physics/Resistance.java
	modified:   eZLib/src/eZLib/Study/BouncingBall.java
	modified:   eZLib/src/eZLib/Study/FluideResSketch.java
	modified:   eZLib/src/eZLib/Study/ForceSketch.java
	modified:   eZLib/src/eZLib/Study/FrictionSketch.java
	modified:   eZLib/src/eZLib/Study/SolarSystem/Planet.java
	modified:   eZLib/src/eZLib/Study/SolarSystem/SunSysSketch.java
	modified:   eZLib/src/eZLib/Study/VectorSketch.java
	modified:   eZLib/test/eZLib/EulerAnglesTest.java
	modified:   eZLib/test/eZLib/UTools.java
	modified:   eZLib/test/eZLib/VectorTest.java