squash bug in fix srp that was incorrectly comparing cutoffs for triclinic cells

  rmax = sqrt(rsqmax);

  double cutneighmax_srp = neighbor->cutneighmax + 0.51*rmax;

  // find smallest cutghost

  double cutghostmin = comm->cutghost[0];

  if (cutghostmin > comm->cutghost[1])

    cutghostmin = comm->cutghost[1];

  if (cutghostmin > comm->cutghost[2])

    cutghostmin = comm->cutghost[2];

  double length0,length1,length2;

  if (domain->triclinic) {

    double *h_inv = domain->h_inv;

    length0 = sqrt(h_inv[0]*h_inv[0] + h_inv[5]*h_inv[5] + h_inv[4]*h_inv[4]);

    length1 = sqrt(h_inv[1]*h_inv[1] + h_inv[3]*h_inv[3]);

    length2 = h_inv[2];

  } else length0 = length1 = length2 = 1.0;

  // find smallest cutghost.

  // comm->cutghost is stored in fractional coordinates for triclinic

  double cutghostmin = comm->cutghost[0]/length0;

  if (cutghostmin > comm->cutghost[1]/length1)

    cutghostmin = comm->cutghost[1]/length1;

  if (cutghostmin > comm->cutghost[2]/length2)

    cutghostmin = comm->cutghost[2]/length2;

  // stop if cutghost is insufficient

  if (cutneighmax_srp > cutghostmin){