mathutil.py: fixed bug occuring when getScaledDim was given size tuples instead of Point2D
mathutil.py: fixed bug occuring when getScaledDim was given size tuples instead of Point2D

svn path=/trunk/libavg/; revision=3848

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