apereo#34 Method visibility changed to allow easier customization of …

…redirect handling.

CAS_ProxiedService_Http_Post can now be extended and with a single method
change redirection can be halted.

source/CAS/ProxiedService/Http/Abstract.php

@@ -231,7 +231,7 @@ protected function makeRequest ($url)
         $this->_cookieJar->storeCookies($url, $request->getResponseHeaders());
 
         // Follow any redirects
-        if ($redirectUrl = $this->_getRedirectUrl($request->getResponseHeaders())) {
+        if ($redirectUrl = $this->getRedirectUrl($request->getResponseHeaders())) {
             phpCAS :: trace('Found redirect:'.$redirectUrl);
             $this->makeRequest($redirectUrl);
         } else {
@@ -258,7 +258,7 @@ abstract protected function populateRequest (CAS_Request_RequestInterface $reque
      *
      * @return string or null
      */
-    private function _getRedirectUrl (array $responseHeaders)
+    protected function getRedirectUrl (array $responseHeaders)
     {
         // Check for the redirect after authentication
         foreach ($responseHeaders as $header) {