Merge branch 'hotfix/3611'

Close #3611
Zend\Db Oracle Fixes
* fixes for SelectDecorator method signatures
* fixes for Result iteration
* cs fixes
Merge branch 'hotfix/db-oracle-interfaces-and-cs' of git://github.com/ralphschindler/zf2 into hotfix/3616
Merge branch 'hotfix/3616' into develop

Forward port #3616