[7.03.0204]

[7.03.0204]
1) Clear statements' cursors on commit/rollback.
2) Change SQLColumns, SQLTablePrivileges to take show_system_tables
   option into account.
3) When an ODBC 2.x application working with an ODBC 3.x driver
   calls SQLExecDirect, SQLExecute, or SQLParamData, and a searched
   update or delete statement was executed but did not affect any
   rows at the data source, the ODBC 3.x driver should return
   SQL_SUCCESS. When an ODBC 3.x application working with an ODBC
   3.x driver calls SQLExecDirect, SQLExecute, or SQLParamData
   with the same result, the ODBC 3.x driver should return
   SQL_NO_DATA.