CBound operator+= updated the minimum value or the maximum value, but
never both. (I think the operator+=(CVector3D) has always been buggy
(because it assumes min<max, which isn't true of empty bounds), and I
propagated the error to operator+=(CBound) ages ago.)
Added test cases, and fixed.
This was SVN commit r4244.
and a fix for the auto-build: #define enums from EXT_framebuffer_object
* clip shadow bounds to frustum
* add CBrush, a class representing a convex object
This was SVN commit r3695.
