Allow REASSIGNED OWNED to handle opclasses and opfamilies.

Robert Haas <rhaas@postgresql.org>

Commit: 1a0dd89da41ff619d763500961df1d7b0e9629d2
Author: Robert Haas <rhaas@postgresql.org>
Date: 2010-07-03T13:53:38Z
Releases: 8.3.12
Allow REASSIGNED OWNED to handle opclasses and opfamilies.

Backpatch to 8.3, which is as far back as we have opfamilies.
The opclass portion could probably be backpatched to 8.2, when
REASSIGN OWNED was added, but for now I have not done that.

Asko Tiidumaa, with minor adjustments by me.

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