- Wrap notify() calls in SAVETMPS/FREETMPS, so the mortal SVs would not   pile up until forever. This commit fights the memory leak, that is an   effect of many too-much delayed sv_2mortal() calls.
- Wrap notify() calls in SAVETMPS/FREETMPS, so the mortal SVs would not
  pile up until forever. This commit fights the memory leak, that is an
  effect of many too-much delayed sv_2mortal() calls.

run4flat/Primo,run4flat/Primo