Testing syntax for H2O Builders
updates from test.0xdata.com fails
Merge branch 'master' of github.com:0xdata/h2o
Yank old Exec stuff, add Java Builders

Legos of M/R passes over a frame.
Fix leaking key when scoring adapting models
Fix leaking key during score of adapted models
Try the groupby syntax, still failing generics

java generics are ... interesting....
stuff for GBMGrid
reduced to 14GB heap for laptop
tweaked for fail/pass cases
tweaked
testing on 176-180
use 2/RemoveAll.json
fix some text
some more parallel grid stuff
polling problem with storeview noise
Lower startup pause to 100ms from 1000ms
Add IcedLong & hashCode & equals
Fix bug in Exec2 ASTTable
Split new code into exec.Flow

Move "legos" into exec.Flow.
Split FlowTest into 2 files, so I can use anonymous inner classes.