Update regression tests for ONLY and other recent changes.

src/test/regress/expected/aggregates.out

src/test/regress/expected/create_view.out

src/test/regress/expected/rules.out

src/test/regress/input/misc.source

src/test/regress/output/misc.source

src/test/regress/sql/aggregates.sql

src/test/regress/sql/create_view.sql