bug#25913: metabug: move gna.org packages to new upstream locations

[ng0]

As you might have noticed (or not), gna.org is closing down soon.

Read http://gna.org/forum/forum.php?forum_id=2545 for more on the
subject.

So we need to move yet another bunch of packages to where ever they moved
now. The sources I mean. And maybe notify upstream in case you feel like
it.

I will open this as a bug so that it can be closed once it is done.
Please close this bug once all packages have been moved.


Packages are few in number:

address@hidden ~/src/guix/guix]$ egrep -nr "gna.org" gnu/packages
gnu/packages/guile.scm:1289:                    
"http://download.gna.org/guile-dbi/guile-dbi-";
gnu/packages/guile.scm:1312:    (home-page 
"http://home.gna.org/guile-dbi/guile-dbi.html";)
gnu/packages/guile.scm:1327:                    
"http://download.gna.org/guile-dbi/guile-dbd-sqlite3-";
gnu/packages/datastructures.scm:33:              (uri (string-append 
"http://download.gna.org/gdsl/";
gnu/packages/datastructures.scm:39:    (home-page "http://home.gna.org/gdsl/";)
gnu/packages/game-development.scm:324:              (uri (string-append 
"http://download.gna.org/allegro/allegro/";
gnu/packages/game-development.scm:362:              (uri (string-append 
"http://download.gna.org/allegro/allegro/";
gnu/packages/game-development.scm:402:              (uri (string-append 
"http://download.gna.org/allegro/allegro/";
gnu/packages/games.scm:3178:           "http://download.gna.org/freeciv/";
gnu/packages/gtk.scm:735:                   
"http://download.gna.org/guile-cairo/guile-cairo-";

Thanks!