symbol versioning of private libraries builds

[Volker Lendecke]

On Fri, Dec 10, 2010 at 08:42:48AM -0500, simo wrote:
> > but we have no way to enforce that, and I suspect it will happen. 
> 
> In this case the best option is to abort immediately at application
> startup.
> Anything else is begging for obscure errors or crashes later on an big
> headaches.

Indeed. I've gone through some pain to remove the talloc
dependency from libwbclient for exactly that reason.

Volker