- create_all(), drop_all(), create(), drop() all raise

- create_all(), drop_all(), create(), drop() all raise
an error if the table name or schema name contains
more characters than that dialect's configured
character limit.  Some DB's can handle too-long
table names during usage, and SQLA can handle this
as well. But various reflection/
checkfirst-during-create scenarios fail since we are
looking for the name within the DB's catalog tables.
[ticket:571]