Revert "Cleanup."

This reverts commit 1303d1879257b80b097b76c69b7898d4fce1a4f7.
Merge branch 'master' into arno-kaggle
Submission 33: 10-fold CV with 5 repeats, using winning grid-search parameters
from Meetup script for 300,300 with 100 epochs.
10-fold cv MSE: 0.08584288 0.8234492 0.2522184 0.09721899 0.1120842
10-fold cv CMRMSE: 0.4698467
LB: 0.44366
Use every 5-th point, and take winning parameters from grid search for 300,300
with 100 epochs.
CV score is 0.596 with 10-fold.
Submitted with ensemble size of 20, obtained 0.485 on LB.
Submission 34, same as 33, but use glm for pH cv score: 0.4354 RMSE: 0.2929896 0.9074410 0.3301868 0.3117996 0.3347898 LB: 0.45977
Merge branch 'master' into arno-kaggle
submission 35, same as 34, but use log for P cv score: 0.4346 RMSE: 0.2929896 0.9037252 0.3301868 0.3117996 0.3347898 LB: 0.47375
Add memory cleanup logic in R by Jo-fai.
Merge branch 'master' into arno-kaggle

Conflicts:
	R/examples/Kaggle/MeetupKaggleAfricaSoil.R
Add initial version of TradeShift Kaggle script for Logistic Regression with DL.
No pair-wise feature combinations yet. No tuning. Just proof of concept.
Cap ensemble predictions at 1e-15 and 1-1e-15.
Skip model building on constant response y14.
Initial version for Ensemble of RandomForest.
Cleanup: use h2o.exec and improve logging.
Cross-validate with an ensemble.
Add comments for first submission.
come cleanup and one new test
Merge branch 'master' of github.com:0xdata/h2o
add which, trim, h2o.sample and documentation
change test to NOPASS