Fix of missing import

Argggh!!!
Merge branch 'master' of github.com:0xdata/h2o
Added support for Job cancellation to GLM2. Fixed incremental validation.
Updated and added new R documentation
Merge branch 'master' of https://github.com/0xdata/h2o
Fixed info for fluid vecs in inspect1.
Merge branch 'master' of github.com:0xdata/h2o
R: h2o.gbm: add distribution parameter
Clean up SUmmary2
Merge branch 'master' of github.com:0xdata/h2o
edits to R docs (RF)
add R doc GBM
missing who-knows in h2o.gbm rdoc
R: h2o.gbm rdoc updates
Removed response from cols to ignore UI
GBM speedups

Remove the divides in inner loops.
For binning, multiply by inverse.
For mean/var, accumulate sums and sums-of-squares and convert to mean &
variance later.
Merge branch 'master' of github.com:0xdata/h2o
Add hidden blocking parameter to Parse1.
R doc and library tweaks
R: change docs and demos to use correct connection syntax