Math fixes and additions:
quaternion setFromAxes function fixed
Vector3 mul with Matrix3 function added
Matrix3 added function setFromAxis
Refix quaternion setFromAxes
added fast normalization to vectors classes
added fast inv sqrt to MathUtils
added FastMathTest class
Added isIdentity method
Added isEqual methods to MathUtils
Added tolerance to isIdentity method of Quaternion class
Added det == 0 check on renderable worldTransform to avoid exception during ModelInstance rendering
Added det3x3 method to MAtrix4 classes and modified BaseShader class to use it
Removed fastInvSqrt methods
Changed Input/Setter of DefaultShader worldViewTrans to viewWorldTrans and fixed the function
Added AbsoluteFileHandleResolver to resolve absolute paths
Removed fast math test
Merge pull request #1393 from lordjone/test

Math fixes and additions: