Connected components: Optimized blob merging.
Connected components: Optimized blob merging.

svn path=/trunk/libavg/; revision=2563

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