Camera3D: Log missing uniforms from current shader
Window: IsOpen const-qualified
Window: Fix SetEventHandler return type on error
Camera3D: Add various error checking
Window: Various methods const-qualified
Texture: Add some error checking
Camera3D: Fix log messages in Unbind
Camera2D: Add various error checking
Camera2D: Add Unbind Log warnings
Camera2D: Return BGE_FAILURE on minor errors
Camera*D: Update Bind/Unbind documentation