[PATCH] fix libdbi hardcoded driver directory usage

[Bill Nottingham]

Geert Janssens (janssens-geert at telenet.be) said: 
> Obviously, it's easy to configure with --with-dbi-dbd-path pointing at the 
> proper location for development and all is well.
> 
> I just wonder if it's possible to rewrite configure in such a way that it 
> always does the right thing. I mean is there some automatic parameter like 
> $libdir but one that then points to the system wide lib directory instead of 
> the one relative to prefix ?

You could have the configury not set GNC_DBD_DIR *at all*, unless
--with-dbi-dbd-path is passed. That's a more complex change to the
environment, though.

Bill