Core/Packet Update somes Structures and temporary fix the questsystem problem for compile and tests

Structure update :
CMSG_GOSSIP_SELECT_OPTION, CMSG_QUESTGIVER_ACCEPT_QUEST,
CMSG_QUESTGIVER_QUERY_QUEST, CMSG_QUESTGIVER_REQUEST_REWARD,
CMSG_BUY_BANK_SLOT, CMSG_BUYBACK_ITEM, CMSG_OPEN_ITEM,
CMSG_ITEM_REFUND_INFO.