Change the arguments to xterm to support (older?) xterms that seem to pass the whole -e argument to execvp, if it's quoted as a single string.
Change the arguments to xterm to support (older?) xterms that seem
to pass the whole -e argument to execvp, if it's quoted as a single
string.

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