second round of making per-atom allocations consistent.

now all sections that dimension per-atom local arrays to atom->nmax
will also *test* for atom->nmax and thus we avoid potential segfaults
in all cases where atom->nlocal or atom->nlocal+atom->nghost are 0.
it doesn't make sense to test for these if the arrays are dimensioned
to atom->nmax afterwards anyway.

src/compute_temp_partial.cpp

@@ -215,7 +215,7 @@ void ComputeTempPartial::remove_bias_all()
   int *mask = atom->mask;
   int nlocal = atom->nlocal;
 
-  if (nlocal > maxbias) {
+  if (atom->nmax > maxbias) {
     memory->destroy(vbiasall);
     maxbias = atom->nmax;
     memory->create(vbiasall,maxbias,3,"temp/partial:vbiasall");