riffenc: add option to ff_put_bmp_header to ignore extradata

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/riffenc: indent

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
wtvenc: populate VIDEOINFOHEADER2

Fixes ticket #2835.

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>