add the ifelse case to h2o.exec r unit
Put a warnings list in Model, and add a warning if a GLM user chooses variable importance but not use_all_factor_levels.
remove dependence on destination key and client
Fix of syntax error !
Merge branch 'master' of https://github.com/0xdata/h2o into anqi-rh2o

Conflicts:
	R/h2o-package/R/Internal.R