Checking in changes prior to tagging of version 3.68.

Changelog diff is:

diff --git a/Changes b/Changes
index 5963396..5ca3853 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,7 @@
+3.68
+
+    - upgrade to jQuery 1.9.1
+
 3.67

     - eg/realtime-chat/chat.psgi: fix a destination to connect via web socket.(reported by shoutm)