pfPorts: PHP 5.3.21 -> 5.3.22 (FreeBSD ports r312933)

Now based on FreeBSD port commit r312933:
Author: flo <flo@FreeBSD.org>
Date:   Mon Feb 25 16:48:45 2013 +0000

    - enable LINKTHR OPTION by default as was done when lang/php5 was updated
      to 5.4, this should prevent segfaults when modules use libs with thread
      support enabled.

    Discussed with:     ale

Note:
The change for LINKTHR is not visible since this was one of our
local modifications, thus: One less to care about from now on.