[Gambas-bugtracker] Bug #1816: [patch] fix build failure fix with mysql8

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.1816&from=L21haW4-

Comment #3 by Gianfranco COSTAMAGNA:

I honestly don't know if doing something like typedef char my_bool; will fix for both mariadb and mysql implementations, probably it will