turn on --isl-schedule-maximize-band-depth by default
turn on --isl-schedule-maximize-band-depth by default

On average, this seems to produce better results on PolyBench.

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

nicolasvasilache/ppcg,nicolasvasilache/ppcg,Meinersbur/ppcg,Meinersbur/ppcg