pgsql: Fix tracking of dump-order dependencies for stand-alone composite

Log Message:
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Fix tracking of dump-order dependencies for stand-alone composite types.
Per report from Robert Koepferl.

Modified Files:
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pgsql/src/bin/pg_dump:
pg_dump.c (r1.399 -> r1.400)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.c.diff?r1=1.399&r2=1.400)