PandoraBox* pbox = reinterpret_cast<PandoraBox*>(&can_of_worms);
pbox->open();
pbox->flush();
Nickolay may want to undo my ods.h changes if gcc insists
in its crusade against non-PODs and poodles.
1) sorted or unsorted
2) POD or objects
3) with or without inline storage
4) allocating from auto- or permanent-pool
All array constructors take MemoryPool& instead of MemoyPool*
