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.