If the user wants to enable the 'glut' PACKAGECONFIG for mesa-demos, freeglut
is required to provide the dependency before the demos can be compiled.
NOTE! this is a cross-layer dependency (freeglut is currently only available
in meta-oe). However 'glut' is not a default PACKAGECONFIG (so this is
allowed).
Signed-off-by: Trevor Woerner <twoerner@gmail.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
