Simplify the OpenSUSE generate_icicle.
Simplify the OpenSUSE generate_icicle.

Since it was doing largely the same stuff as _internal_customize(),
combine the two.  This did require adding a tri-state selector
to _internal_customize, but I think it is pretty self-explanatory.

Signed-off-by: Chris Lalancette <60b62644009db6b194cc0445b64e9b27bb26433a@redhat.com>

ndonegan/oz,NeilBryant/oz,moofrank/oz,clalancette/oz,imcleod/oz,nullr0ute/oz,nullr0ute/oz,imcleod/oz,cernops/oz,clalancette/oz,cernops/oz,ndonegan/oz,NeilBryant/oz,mgagne/oz,moofrank/oz,mgagne/oz