Simple_sql example doesn't work with Firebird driver

[Maxim Reznik]

If you uncomment firebird lines in examples/sql/simple_sql, compile and run, it gives errors:

raised SQL.SQL_ERROR : Dynamic SQL ErrorSQL error code = -204Table unknownPOINTAt line 1, column 13

If you create table POINT by your self, id doesn't work either:

raised SQL.SQL_ERROR : unsuccessful metadata updatecan't format message 8:132 -- message file /usr/share/firebird/firebird.msg not found