SchemaTool - CreateCommand should dump "valid" SQL and omit ATTENTION line

When running "doctrine orm:schema-tool:create --dump-sql" it should not omit the semicolon of the last SQL statement (though the current SQL output is also valid and executable) and it should omit the ATTENTION line (or output it as an SQL commented line) as the schema isn't applied/created anyways.

This would make it much easier to write for e.g. the SQL schema to a file for further processing; but might also break systems (e.g. buildsystems) which have a workaround for the above mentioned shortcoming.