Fixed bug #50308 - session id not appended properly for empty anchor tags

The issue was actually because a lack of space before a "/" marking the tag
as empty. This was being swallowed in the rule for unquoted values. Fixed
by making that rule exclude quotes (as per spec anyway).
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  Fixed bug #50308 - session id not appended properly for empty anchor tags
regenerate url scanner