Merge branch 'hotfix/4135'

Close #4135
Modified Router to use backwards compatible regex expression during preg_match.  Replacing occurances of ?< with ?P< allows for older versions of pcre to properly handle routing.
Merge pull request #4138 from rurri/zf4134

Modified Router to use backwards compatible regex expression Issue: 4134
Merge branch 'hotfix/4138' into develop

Forward port #4138