Bug#886837: scilab: impossible to plot anything

[Cedric.Flageul]

I have found a workaround without 3D acceleration using MESA 
(https://www.mesa3d.org/envvars.html)

The command-line when calling scilab should be:
        LIBGL_ALWAYS_SOFTWARE=1 MESA_GL_VERSION_OVERRIDE=3.0 scilab

Regards,
CF