aacsbr: support hardcoding tables.

For sbr_qmf_window_us there is even a question if it maybe
should be fully hardcoded all the time.
Since half of it is coded, it ends up in .data and not .bss.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
cabac: initialize all of ff_h264_cabac_tables programmatically.

Moves it from .data to .bss, slightly reducing binary size.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
cabac: Allow hardcoding CABAC table.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
huffyuvdec: avoid large stack use.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>