- Fix up for swapout complete. Now always set the state to SWAPOUT_DONE

- Fix up for swapout complete.  Now always set the state to SWAPOUT_DONE
  and add the object size to the 'store_swap_size'.  The release call
  will free and subtract it.
- Change storeMaintainSwapSpace() and storeGetMemSpace().  Either the
  object is locked, or it can be removed.  For storeMaintainSwapSpace()
  if the objects age is less than the dynamic LRU value, then keep it
  around.  This may cause problems after a restart when the store linked
  list is not ordered.