Catalog views failed to show partitioned table information.

Hi,

There are some catalog views which do not show the partitioned table and
its index entry.
One of them is "pg_indexes" which failed to show the partitioned index.
Attached the patch which fixes the same.

Other views such as pg_stat*,pg_statio_* has the same problem for
partitioned tables and indexes.
Since the partitioned tables and its indexes considered as a dummy, they do
not have any significance in stat tables,
can we still consider adding relkind=p in these pg_stat_* views? Thoughts?

Regards,
Suraj