glm2 updates.
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o
Merge branch 'master' of github.com:0xdata/h2o
bug fix in glm2. xval models for different lambdas  all had the same key and were being overwritten repeatedly.
Merge branch 'master' of github.com:0xdata/h2o

Conflicts:
	src/main/java/hex/glm/GLMModel.java
Merge finish.