pgsql: Come to think of it, we should check that commutator pairs have

Log Message:
-----------
Come to think of it, we should check that commutator pairs have the same
merges/hashes property settings.

Modified Files:
--------------
pgsql/src/test/regress/expected:
opr_sanity.out (r1.74 -> r1.75)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/opr_sanity.out.diff?r1=1.74&r2=1.75)
pgsql/src/test/regress/sql:
opr_sanity.sql (r1.60 -> r1.61)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/opr_sanity.sql.diff?r1=1.60&r2=1.61)