Fix new http tests added in r81635 on Windows

* http/tests/cache/post-redirect-get.php:
* http/tests/cache/post-with-cached-subresources.php:
* http/tests/cache/resources/post-image-to-verify.php:
Pull in portabilityLayer.php, which implements sys_get_temp_dir for PHP 4.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@81665 268f45cc-cd09-0410-ab3c-d52691b4dbfc
4 files changed