Added display of partial results to GBM.
Merge branch 'master' of github.com:0xdata/h2o

Conflicts:
	src/main/java/hex/gbm/GBM.java
	src/main/java/water/fvec/Vec.java
Merge branch 'master' of github.com:0xdata/h2o

Conflicts:
	src/main/java/hex/gbm/GBM.java