pgsql: Update "expected" regression test output for the recent stats

Log Message:
-----------
Update "expected" regression test output for the recent stats collector
checkin. My apologies for breaking the tests.

Modified Files:
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pgsql/src/test/regress/expected:
rules.out (r1.98 -> r1.99)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/rules.out.diff?r1=1.98&r2=1.99)