psqlodbc - dayofweek and week functions are not supported but actually are

When calling SQLGetInfo(SQL_TIMEDATE_FUNCTIONS), psqlodbc tells that WEEKOFDAY and WEEK are not supported. But in convert.c, it converts these two functions to extrat(dow/week from $1). So if you just send dayofweek() in a query, PostgreSQL will return correct values.
So in this method of info.c:
RETCODE  SQL_API
PGAPI_GetInfo(HDBC hdbc,
     SQLUSMALLINT fInfoType,
     PTR rgbInfoValue,
     SQLSMALLINT cbInfoValueMax,
     SQLSMALLINT * pcbInfoValue)
You need to append two more bits:
  case SQL_TIMEDATE_FUNCTIONS: /* ODBC 1.0 */
   len = 4;
   value = (SQL_FN_TD_NOW | SQL_FN_TD_DAYOFWEEK | SQL_FN_TD_WEEK );
   break;

I am using  10.03.0000.
thanks,Song X. Gao