updated pjsip stack
There is still a bug on incoming calls when buiding for android
diff --git a/jni/pjproject-android/pjsip-apps/src/pjsystest/main_wm.c b/jni/pjproject-android/pjsip-apps/src/pjsystest/main_wm.c
index aaaac1e..debe8dd 100644
--- a/jni/pjproject-android/pjsip-apps/src/pjsystest/main_wm.c
+++ b/jni/pjproject-android/pjsip-apps/src/pjsystest/main_wm.c
@@ -1,4 +1,4 @@
-/* $Id: main_wm.c 3553 2011-05-05 06:14:19Z nanang $ */
+/* $Id$ */
 /* 
  * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
  *