[Bug Fix] Fix for undefined MySQL library behavior. (#2834)

* MYSQL objects cannot be copied in a well defined way, this removes the copy and replaces it with another connection

* Change to share underlying pointers.

* Push up mutex changes

* Post rebase

* Formatting

---------

Co-authored-by: KimLS <KimLS@peqtgc.com>
Co-authored-by: Akkadius <akkadius1@gmail.com>

shared_memory/main.cpp

@@ -124,7 +124,7 @@ int main(int argc, char **argv)
 			return 1;
 		}
 	} else {
-		content_db.SetMysql(database.getMySQL());
+		content_db.SetMySQL(database);
 	}
 
 	LogSys.SetDatabase(&database)