added method setDisabled(T/F) to button class
added method setDisabled(T/F) to button class

svn path=/trunk/libavg/; revision=2769

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