yade is in conflict with freeglut 3.0.0

@gladk could you add a conflict in dependencies with freeglut 3.0.0? Please have a look at: !160 (comment 180776581)

It is confirmed that freeglut version 3.0.0 has some bug which causes crashes in 3D display.

We narrowed it down to a very simple call of glutSolidSphere(……)