bumped Symfony version to 2.4.0

Author: fabpot

Kernel.php

@@ -60,12 +60,12 @@ abstract class Kernel implements KernelInterface, TerminableInterface
     protected $startTime;
     protected $loadClassCache;
 
-    const VERSION         = '2.4.0-RC1';
+    const VERSION         = '2.4.0-DEV';
     const VERSION_ID      = '20400';
     const MAJOR_VERSION   = '2';
     const MINOR_VERSION   = '4';
     const RELEASE_VERSION = '0';
-    const EXTRA_VERSION   = 'RC1';
+    const EXTRA_VERSION   = 'DEV';
 
     /**
      * Constructor.