Fix for not saving prior model distribution field.

Clean-up in model constructors.
Merge branch 'master' of github.com:0xdata/h2o

Conflicts:
	src/main/java/hex/singlenoderf/SpeeDRFModel.java
Sigh. Fixed a typo.
Fix of ctor call in SpeeDRF.
Merge branch 'master' of github.com:0xdata/h2o
PUB-603: Move autoencoder option to experimental expert mode settings. Clean up parameter handling.
PUB-783: Add test for categorical auto-encoding, fails currently since it's not yet implemented.
Fix for HEX-1776 and PUB-781. Add Runit test for GLM returning models for every lambda in search space.
Update JunitRunnerDebug to contain autoencoder tests.
Merge branch 'arno-deeplearning2'
Ignore failing test for now.