make 'interpolated' match what's going on when the approximation is used (it provides exact answer in dataset many times)
Merge branch 'master' of github.com:0xdata/h2o
added fvec convert via summary2 to the large col libsvm test (passes)
improved exec random cuts with col expressions (so cuts tend to produce data)
Merge branch 'master' of github.com:0xdata/h2o