Remove talloc from libwbclient

[Jeremy Allison]

On Sun, Feb 07, 2010 at 03:56:57PM +0100, Volker Lendecke wrote:
> 
> Right now there are quite a few, but as I said: Most of them
> I inspected were easily replaceable by non-NULL ones. And
> then, a mutex_lock/unlock should not hurt *that* much :-)

Yes, this is what I've been doing (slowly replacing
talloc NULL contexts with usually talloc_tos() contexts).

I'd love to remove all uses of the NULL context in S3,
or at least controll really strictly the few places
where it's necessary.

Jeremy.