Chromakey test image fix.
Chromakey test image fix.

svn path=/trunk/libavg/; revision=5145

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