Push translation offset onto model view stack.
void CL_GraphicContext::push_translate( float x, float y, float z = 0.0);
Detailed description:
This function is a convenience function for calling push_modelview, then mult_translate.
This offset will affect any subsequent display operations on the current displaycard, by translating the position of the display operation with the offset. The offset will be offset by any previous offsets pushed onto the stack, eg. it inherits the previous offset.