Re-added handling of left/right keys to seek in avg_videoplayer.
Re-added handling of left/right keys to seek in avg_videoplayer.

svn path=/trunk/libavg/; revision=5169

hoodie/libavg,scotty007/libavg,th3infinity/libavg,hoodie/libavg,libavg/libavg,th3infinity/libavg,scotty007/libavg,th3infinity/libavg,yyd01245/libavg,libavg/libavg,hoodie/libavg,yyd01245/libavg,scotty007/libavg,hoodie/libavg,yyd01245/libavg,scotty007/libavg,libavg/libavg,yyd01245/libavg,libavg/libavg,th3infinity/libavg