Add a couple of helper functions; IsResponse() and IsError() are boolean functions that say where a value is a GeniResponse.
Add a couple of helper functions; IsResponse() and IsError() are
boolean functions that say where a value is a GeniResponse.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome