#if 0 out the "normal" implementation, so that it doesn't hurt. When it
becomes possible to have the private Array methods separate, remove them
from the main file and remove the #if 0 block from Array+Private.r.
This version is a bit more useful, and we should be able to get rid of the
Stack class. Also, the Ruamoko parts of the autorelease system should be
almost ready now.