Merge bk-internal.mysql.com:/home/bk/mysql-5.0

into  mysql.com:/home/dlenev/mysql-5.0-bg18153

sql/udf_example.cc

@@ -497,7 +497,7 @@ char *metaphon(UDF_INIT *initid, UDF_ARGS *args, char *result,
 	}
     }
   }
-  *length= (ulong) (result - org_result);
+  *length= (ulong) (max(0, result - org_result - 1));
   return org_result;
 }