[Ur] garbage collection

[Marc Weber]

Excerpts from Gergely Buday's message of Mon Feb 21 14:08:59 +0100 2011:
> What does it use for memory management then?

Nothing. It has a block of memory which is only valid during a request.
So its reused for each request.

If the block is too small the whole processing is retried until a max
size is reached which would cause a request to abort.

So if you want permanent memory which is valid for many requests you
have to write your own C extension using malloc.

Marc Weber