[ZODB-Dev] RE: setdefault branch

[Tim Peters]

[Tim Peters]
> ...
> Proposal:  make BTree/Bucket setdefault() a two-argument function (3 if
> you count ``self`` too).  In practice, an explicit default is always
> passed, and not even in theory could we come up with a sane
> default-default that works across all tree types.

This has been done on ZODB/branches/alienoid-btrees_setdefault now.
setdefault() has also been implemented for Buckets there.

Nothing else to do, so in the absence of objections I'll merge this to ZODB
trunk tomorrow.