updated pjsip stack
There is still a bug on incoming calls when buiding for android
diff --git a/jni/pjproject-android/pjsip-apps/src/samples/util.h b/jni/pjproject-android/pjsip-apps/src/samples/util.h
index e68056f..4529fad 100644
--- a/jni/pjproject-android/pjsip-apps/src/samples/util.h
+++ b/jni/pjproject-android/pjsip-apps/src/samples/util.h
@@ -1,4 +1,4 @@
-/* $Id: util.h 4537 2013-06-19 06:47:43Z riza $ */
+/* $Id$ */
 /* 
  * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
  * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>