Made VideoBase::fps into a readonly property since it is an xml attribute as well.
Made VideoBase::fps into a readonly property since it is an xml attribute as well.

svn path=/trunk/libavg/; revision=2627

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