Added testing of gradient at the end of GLM run.
Fixed in ReblanceDataset. correctly pass jobKey when unlocking/deleting results.
some quick variants around independent exec activity at multiple nodes
Merge branch 'master' of github.com:0xdata/h2o
target each hdfs cluster here
GLM2 perf update. Changed computation of gradient and changed GLM2 to compute validation/gradietn every 5th iteration (unless higher precision set).
Merge branch 'master' into glm_bench
Merge branch 'master' of github.com:0xdata/h2o
GLM2 update. Updated line search and gradient computation.
Updated GLM2 prints.
Updated GLM2 line search to trigger if high_accuracy is off (computed every 5 iterations in that case to not to slow down computation too much if not needed).
Added check for complete fail in GLM2 and rerun with high-accuracy mode on.
Minor speedup, use floats instead of doubles in arithmetic expressions.
Fix GLm2 to store validation in all cases.
Updated ADMM solver to completely replace former stopping with gradient check every 10 iterations.
Fix of bug of unclosed vectors.

The vectors were closed only
in MRTask2#getResult call, nevertheless
dfork/asynexec calls do not expect that.
Hence the close of vecs were moved from
MRTask#getResult into #postLocal call
Merge branch 'master' of github.com:0xdata/h2o

Conflicts:
	py/testdir_single_jvm_fvec/test_exec2_operators2.py
typo
fix cloud names to be unique
change ports