BUG: incorrect finite-area faceProcAddressing (fixes #2155)

- when creating a finite-area mesh in parallel, need to determine
  the equivalent ProcAddressing for the faMesh.

  In the faceProcAddressing the collected and sorted order was being
  scattered directly back to the individual processors instead of only
  the sections relevant to each particular processor.

  This caused the observed jumbled order for reconstructed fields.