[Development] Tagging private symbols as such

[Kevin Kofler]

Thiago Macieira wrote:
> Do other people think that is useful? If so, I can make that permanent
> (though disabled for -developer-build).

>From a Fedora perspective, yes. It will make RPM automatically produce 
symbol version dependencies that will correctly break when the package needs 
rebuilding, and thus should allow us to drop any manually added explicit RPM 
dependencies doing the same thing.

        Kevin Kofler