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Fix bug caused when setting default value in Param in interactive mode

Deprecate theano.gof.utils.give_variables_names.

changed optdb.max_use_ratio to 6

Update internal documentation about "How to make a release".

Fix doc

Fix jenkins in 32bit

Pooling rop

Pull Request for release 0.9.0beta1

Simplify warn.ignore_bug_before parameters.
Rewrite "cudnn" to "cuDNN".

Small update in vision state (change version from 0.9.dev5 to 0.9.0beta1).

Update .mailmap
Update NEWS_DEV.txt
Tranfer old content of NEWS.txt to HISTORY.txt
Copy content of NEWS_DEV.txt into NEWS.txt
Update setup.py, doc/conf.py, doc/index.txt
Update warn.ignore_bug_before parameters in configdefault.py and doc/library/config.txt
Fix typo in doc/internal/how_to_release.txt

Cusolver using Cholesky decomposition for symmetric matrices

Broadcasting tutorial

Change default of round() to be as NumPy and warn about it.