fix build

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
open-code the fastx adjuster, as opencv's one is slow

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
another round of senseless tuning

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
remove the cruft for now

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
don't depend on shared object extension

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>