avcodec/options_table: Fix codec_whitelist flags

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/utils: Print the codec name that is missing on the whitelist

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Print an error if -r and -vsync 0 are used together.

Fixes ticket #4041.