Added support to the RpcBehavior for passing back data as part of the RPC-JSON 2.0 error message.
Added support to the RpcBehavior for passing back data as part of the
RPC-JSON 2.0 error message.

chazen/easyXDM,cake-disposal-squad/easyXDM,aaron-goshine/easyXDM,lanson647/easyXDM,oyvindkinsey/easyXDM,jspath/easyXDM,jmptrader/easyXDM,lanson647/easyXDM,chazen/easyXDM,aaron-goshine/easyXDM,cake-disposal-squad/easyXDM,jmptrader/easyXDM,jspath/easyXDM,oyvindkinsey/easyXDM,lanson647/easyXDM,oyvindkinsey/easyXDM,aaron-goshine/easyXDM,jmptrader/easyXDM,oyvindkinsey/easyXDM,cake-disposal-squad/easyXDM,oyvindkinsey/easyXDM,jspath/easyXDM,chazen/easyXDM