changed to always use comma for header, regardless of data separator
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of https://github.com/0xdata/h2o
Added tolerance and standardized knobs to PCA
Added method to call PCA from within R
Bugfix in  GuesParserSetup. When checking file with less than 3 lines, number of columns was not compared to the global setup (as it should) leading to assertion error later.
Merge branch 'master' of github.com:0xdata/h2o
parser test for the tab/comma data/header, and a new s3n test for ec2 touching home2-0xdiag-datasets/10k_small_gz and 1k_small_gz
Add a log statement to track the time of HDFS import folder.
add some features to this test. disabled the expected row count. still hard to figure out how many rows get parsed for weird header file + data file + param combinations with and without headers in the files
forgot I wanted to go back to larger file/row/col counts on this
Fix cyclic serialization bug in RollupStats

Null Frame _fr field in completed MRTask2's so that such objects can be
Iced without passing around the Frame, which points to some Vecs which
point to RollupStats
Missing API in QuantilesPage

NOTE: this & the Quantiles.java should be folded into one file in
hex.Quantiles
Fix temp bugs & debugging prints in DRF2
Removed some redundant code
Add min_rows to GBM & DRF

Also remove trailing blanks
Fix bugs in NA testing in various chunks.

Survive NA's in DRF.
fix leaked DRF keys
More NA handling fixes

Must build histogram on all NA data, but with randomly selected bins
so the "score" to split a column is correct.
Probably better still is putting NA data in a separate bin.
Fix asEnum OBOB bug
enable GBM test of small airline data

Survives all the NA's and predicts well also