Connection creation added to createStatement method for Pgsql.php.
remove '\' character from Traversable because already defined in 'use' statement
[#2899] Remove redundant method declaration

- Re-declaring a method as abstract when defined in an interface being
  implemented can lead to issues under some versions of PHP. Removing
  the abstract method in the abstract class fixes the issue.
Zend\Db\Sql
- Added Quantifier support to Zend\Db\Sql\Select (DISTINCT, ALL and Expression)
Merge commit 'refs/pull/3681/head' of github.com:zendframework/zf2 into hotfix/declare-abstract-method
Merge pull request #3681 branch 'hotfix/declare-abstract-method' Fix #2899
fix invalid docblock
change @return  to @return ClassName
Merge branch 'master' of git://github.com/kitsemets/zf2 into kitsemets-master
Zend\Db\Adapter Pgsql
- cleaned up createStatement() for coding standards, removed excessive commented code
[#3684] Polyfill support for version-dependent classes

- Per ideas from @ircmaxell, removed the conditional declaration of classes in
  favor of an autoloading solution. If using 5.3.3, composer will now load an
  alternate Zend\Stdlib\ArrayObject implementation.

  Both the project- and component-level composer.json files were modified so
  that the change will take place regardless of whether you install the full
  framework or just the component.

- Made changes to the php-code-sniffer configuration to ensure that the
  PHP-5.3.3-specific ArrayObject implementation is not checked, as it violates
  PSR-0 intentionally.

  - Realized that travis-build could be simplified, as .php_cs has the expected
    configuration for the full framework.
oracle transaction support
[#3684] Do polyfill for Session component as well

- SessionArrayStorage and Container were both doing version-specific conditional
  declarations; moved these into a compat layer as was done in Stdlib, and
  updated the composer.json for each of the component and framework.
- Currently, the SessionConfigTest suite is not running for me, but appears to
  be a random autoloading error from running in isolated processes; will see how
  the Travis-CI run looks.
[#3684] Simplified .php_cs fixers declaration

- A constant exists for what I wanted... Thanks, @Maks3w
[#3684] Fix indentation

- Fixes docblock indentation in compat file
Merge commit 'refs/pull/3689/head' of github.com:zendframework/zf2 into hotfix/3684
Merge pull request #3689 branch 'hotfix/3684'
Merge branch 'fix/doc-traversable' of git://github.com/samsonasik/zf2 into hotfix/3679
Merge branch 'hotfix/3679'

Close #3679
Merge branch 'feature/db-select-quantifier' of git://github.com/ralphschindler/zf2 into hotfix/3682
Merge branch 'hotfix/3682'

Close #3682
Fixes #3455