A small change to database formatting, courtesy of Karl Dahlke.
Fixes for dbops.c, so that it will compile with recent toolchains.

Thanks to Karl.
Version 3.4.9.
Add Polish translations for error messages.

Thanks to Wojciech Gac.
Add Polish to the list of supported languages.

Make the Polish messages array selectable at run-time,
and update the User's Guide with credits.
Added changes from Karl Dahlke.
Add a few more URL schemes to the list of known schemes.

Thanks to Tyler Spivey for this patch.