Update to 0.0.20060813: 
- This release makes some improvements to the texture viewer: in particular,
shadow textures will be displayed in grey-scale rather than crashing, and
luminance textures will appear in grey-scale rather than red-scale. There are
miscellaneous other bugfixes and improvements.
- Additionally, the gtkglext LIB_DEPEND was fixed, as 1.0.2 seems to be the
Add OPTIONS support 
Submitted by: Erik Greenwald (maintainer) , itetcu (me)