lavu/parseutils: add av_get_known_color_name()
cmdutils: add -colors option
avcodec/error_resilience check error_concealment, not err_recognition.

err_recognition is supposed to trigger detecting and reporting errors,
not trying to fix them.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/flacdec: also do crc check when er compliant is set

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