Enforce a requirement for some DBMS (Oracle, PostgreSQL, MSSQL) where the table order is quite important in some situations. ;) Since this does not affect the operation of the other DBMS the code is placed into dbal.php.
git-svn-id: file:///svn/phpbb/trunk@9176 89ea8834-ac86-4346-8a33-228a782c2dd0