group Owners update using code

http://social.msdn.microsoft.com/Forums/en/sharepointdevelopment/thread/8c253efe-096c-4537-affd-0a0fdb1a132b


http://social.msdn.microsoft.com/Forums/en/sharepointdevelopment/thread/1ea65718-8728-402c-8c8f-1532d757a2b3