NewChunk bug fix: NewChunk.set_sparse: there was a typo(copy paste error) which lead to indexing by j instead of i.
Merge branch 'master' of github.com:0xdata/h2o
Fix in new chunk: when switching from doubles to integers, new chunk will call setNA(int) which resets _naCnt to -1 which is later used to decide compression strategy. Fixed by setting _naCnt back to correct value after converting to integers.
Bugfix in glm: fixed NPE in cross-validation.
Merge branch 'master' of https://github.com/0xdata/h2o into anqi-gbm