r22637: Allow to specify frequencies in channels option.
r22747: Explain workaround for -vo gl:scaled-osd -ass image corruption.
r22776: 'D' also turns off and on kerndeint
r22779: roff fix: escape dash for options
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22791 b3059339-0415-0410-9bf9-f77b7e298cf2