We forgot to adjust it when we changed relistemp to relpersistence.
* 'schema' is the column/attribute definition for the table. (It's a list
* of ColumnDef's.) It is destructively changed.
* 'supers' is a list of names (as RangeVar nodes) of parent relations.
- * 'istemp' is TRUE if we are creating a temp relation.
+ * 'relpersistence' is a persistence type of the table.
*
* Output arguments:
* 'supOids' receives a list of the OIDs of the parent relations.