r8284: - fixed some uninitialised variables in the irpc code

r8284: - fixed some uninitialised variables in the irpc code

- added code to send multiple irpc calls in parallel, to all servers
  that have registered the given name, with output going in
  io.results[i]. This allows you to make rpc calls to multiple servers
  at once, which is needed for clients like smbstatus
(This used to be commit 061e20e509d95ffe16d7dd6fba7db39fc7a165ed)