|GIT|
Added a .gitignore file
Removed the .hgignore file

|SOURCE|
[Matrix4x4]
Added a forward-declaration for Vector4
[Vector3]
Added a forward-declaration for Matrix3x3
[RenderTypes_Linux_x86]
Stubbed-out the VS_SHADER_MAP enum to work around the requirement for it
in the source for GLShader
[GLExtender]
Changed the return type of RegisterBaseGLExtensions to ZED_UINT32
[GLModel]
SetOrientation uses a Quaternion for the parameter instead of a Matrix3x3
Merge branch 'build_configuration' of https://github.com/El-Rico/ZED