channel_helper now uses the Xcp_channel.t_of_rpc function
channel_helper now uses the Xcp_channel.t_of_rpc function

djs55/xcp-idl,xapi-project/message-switch,johnelse/xcp-idl,Chunjie/xcp-idl,xapi-project/message-switch,euanh/xcp-idl,xapi-project/message-switch