[cl-opengl-devel] Exporting GL types.

Hello Oliver,

I need to use the GL types from both cl-glu and cl-glut so I suppose it'd be nice to export them from the cl-opengl package. Also, I propose to strip the GL their names (as done everywhere else). I realize that this involves a fair bit of renaming throughout the source code so I volunteer to do that. :-)

Ie: gl:float, gl:double, gl:enum, etc...

BTW, the defenums are being canonicalized to int when they should be canonicalized to GLenum (well, unsigned long). I'll fix that tomorrow too.

Let me know if you have any objections.