PHP 5.5 can't fail anymore
Merge pull request #4847 branch 'hotfix/4847'
Merge pull request #4700 from Slamdunk/patch-2

PHP 5.5 can't fail anymore
Fix Zend\Log tests for 5.5.0

- Behavior change in PHP 5.5.0 means needing to change test case
  slightly. Basic assumptions are equivalent, fortunately.
Merge branch 'hotfix/4700' into develop

Forward port #4700