Should fix PHP update to version > 5.3.3 crashing cronks

Fixed SplFileObject casting behaviour crashing PHP 5.3.3. AppKitFileUtil::getAlternateFilename
does not, as the method would suggest, return a filename, but an SplFileObject instead.
This is being cast to a string in file_exists() previously, but it seems that this behaviour
does not apply anymore in PHP 5.3.3+. So MetaInformationSuccessView now call $file->getRealPath()
to safely get the templates file path.

refs #3751

app/modules/Cronks/views/System/ViewProc/MetaInformationSuccessView.class.php

@@ -42,7 +42,7 @@ public function executeJson(AgaviRequestDataHolder $rd) {
 
             if($file === null)
                 $file = AppKitFileUtil::getAlternateFilename(AgaviConfig::get('modules.cronks.xml.path.grid'), $rd->getParameter('template'), '.xml');
-            $template = new CronkGridTemplateXmlParser($file);
+            $template = new CronkGridTemplateXmlParser($file->getRealPath());
             $template->parseTemplate();
             $user = $this->getContext()->getUser()->getNsmUser();
             $data = $template->getTemplateData();
@@ -67,4 +67,4 @@ public function executeJson(AgaviRequestDataHolder $rd) {
 
 }
 
-?>
+?>