few changes to run benchmarks on glm2.
GLM2 performance update. Made GLM2 to be as fast as GLM1 in default settings. To get higher accuracy, run with line_search on.
Merge branch 'master' of github.com:0xdata/h2o

Conflicts:
	src/main/java/hex/glm/GLM2.java
Renamed line_search to higher_accuracy.