Send errors from RPC invocation exceptions
Send errors from RPC invocation exceptions

For tavendo/AutobahnCpp#24

alanpich/AutobahnCpp,tempbottle/AutobahnCpp,alanpich/AutobahnCpp,alanpich/AutobahnCpp,tavendo/AutobahnCpp,jpetso/AutobahnCpp,jpetso/AutobahnCpp,tavendo/AutobahnCpp,stopthatcow/AutobahnCpp,shuyunqi/AutobahnCpp,e12009/AutobahnCpp,tempbottle/AutobahnCpp,e12009/AutobahnCpp,stopthatcow/AutobahnCpp,jpetso/AutobahnCpp,shuyunqi/AutobahnCpp