on reconsideration, incrementing number of samples with unu resample -s is now with +=N and -=N.  x=F and /=F also work for scaling number of samples
on reconsideration, incrementing number of samples with unu resample -s is now with +=N and -=N.  x=F and /=F also work for scaling number of samples

git-svn-id: 9e9401559e51101c165cdce4d49b411eb20436ed@5878 3d70eeeb-363e-0410-a505-8a46323a89f2

BRAINSia/teem,Slicer/teem,Slicer/teem,BRAINSia/teem,BRAINSia/teem,Slicer/teem,BRAINSia/teem,Slicer/teem,BRAINSia/teem,Slicer/teem