Comment #6 on issue 1283 by metaweta: Constructed objects don't get their
constructor property whitelisted.
http://code.google.com/p/google-caja/issues/detail?id=1283
But that means (new f).constructor isn't visible unless someone has looked
at a property of f. So I guess we have two options:
1. Whitelist constructor on every object
2. Whitelist f.prototype.constructor in markFunc. That would be sad--I was
trying to keep that operation cheap by using the deferral trick. Since we
know that f.prototype is brand new, however, we can avoid a lot of the
logic and simply set the eight internal properties.
