Review preg_match() usage #911

PHP 5.1.x appears to handle backslash escaped characters differently from 5.2/5.3.

Example: core/SmartyPlugins/output.cachebuster where php 5.1.x reports preg_replace() [function.preg-replace]: Unknown modifier '.'

Propose using:

      $pattern = array(
        '~<script type="text/javascript" src="([^"]+)">~',
        '~<script src="([^"]+)" type="text/javascript">~',
        '~<link rel="stylesheet" type="text/css" href="([^"]+)"~',
      );

I'm marking this as fixed cause I don't see anything more that can done here, other than to recommend using a newer version of PHP.

See changesets [1377, [1378].