SQL config file names

[Alan DeKok]

Hugh Messenger wrote:
> Of course, that would also simplify configuration, so in radiusd.conf we can
> have ...
> 
> db_dialect = mysql

  It's a lot easier to understand, and a lot easier to manage.  "Change
db_dialect to your DB and everything will Just Work" is a good thing to
have.

> ... it just becomes ...
> 
>  $INCLUDE ${confdir}/sql/${db_dialect}/sqlippool.conf
> 
> ... no need to fart around editing the INCLUDE lines.

  Much, much, better.

  We should do this for 2.0, not for 1.1.7 of course...

  Alan DeKok.