PROG: Previous change to ControlNet, caused a change in the output that jigsaw...

PROG: Previous change to ControlNet, caused a change in the output that jigsaw produces.  Renamed ControlNet::GetNumberOfMeasuresInImage to ControlNet::GetNumberOfValidMeasuresInImage.  References #1603

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@5646 41f8697f-d340-4b68-9986-7bafba869bb8