More splits and cleanups...

src/test/regress/expected/create_misc.out

src/test/regress/expected/misc.out

src/test/regress/expected/select.out

src/test/regress/expected/select_distinct.out

src/test/regress/expected/select_distinct_on.out

src/test/regress/expected/select_into.out

src/test/regress/input/Makefile

src/test/regress/input/copy.source

src/test/regress/input/create_function_1.source

src/test/regress/input/create_function_2.source

src/test/regress/output/Makefile

src/test/regress/output/copy.source

src/test/regress/output/create_function_1.source

src/test/regress/output/create_function_2.source

src/test/regress/sql/create_aggregate.sql

src/test/regress/sql/create_misc.sql

src/test/regress/sql/misc.sql

src/test/regress/sql/sanity_check.sql

src/test/regress/sql/select.sql

src/test/regress/sql/select_distinct.sql