clear php caches if possible after updating piwik to 2.5.0 to make sure no file is still in cache

core/Updates/2.5.0-rc2.php

@@ -26,6 +26,9 @@ class Updates_2_5_0_rc2 extends Updates
             $path = PIWIK_INCLUDE_PATH . $file;
 
             if (file_exists($path)) {
+                if (function_exists('opcache_invalidate')) {
+                    opcache_invalidate($file, $force = true);
+                }
                 self::deleteIfLastModifiedBefore14August2014($path);
             }
         }

core/Updates/2.5.0-rc4.php

@@ -9,6 +9,7 @@
 
 namespace Piwik\Updates;
 
+use Piwik\Plugins\CoreUpdater\Controller;
 use Piwik\Tracker\Cache;
 use Piwik\Updates;
 
@@ -21,5 +22,6 @@ class Updates_2_5_0_rc4 extends Updates
     static function update()
     {
         Cache::deleteTrackerCache();
+        Controller::clearPhpCaches();
     }
 }