renamed default column names to C1,C2,…,CN from 0,1,…,n
Updated python tests to work with new default column names in VAs (C1,C2,…,CN instead of 0,1,…,N)
Merge branch 'master' of github.com:0xdata/h2o
Performance harness prototype
glm binomial test
Merge branch 'master' of https://github.com/0xdata/h2o
updated a test to work with new default naming convention.
Merge branch 'master' of github.com:0xdata/h2o
Fix prediction with binary classifier in GBM.

GBMModel did not know that a tree is composed only of one internal tree
instead of 2. Hence, GBMModel.score() function was updated.
Corresponding fix was propagated into generated model.
New R tests + minor fixes in shared R-code.

Javapredict GBM shared code now save results from h2o in
the same way as DRF shared code.
Exec2: push the function return value to the right place.

Fix VEN-2
Merge branch 'master' of github.com:0xdata/h2o
community doc mod
sparse data
Merge branch 'master' of https://github.com/0xdata/h2o
Merge branch 'master' of https://github.com/0xdata/h2o
md5 for windows in the R make
Missing some cran loads in Runits
quietly choose CRAN repo for other packages if not set already
Install R.utils
Merge branch 'master' of https://github.com/0xdata/h2o