SET autocommit no longer needed in /contrib because pg_regress.sh does

contrib/btree_gist/expected/btree_gist.out

contrib/btree_gist/sql/btree_gist.sql

contrib/cube/sql/cube.sql

contrib/dblink/expected/dblink.out

contrib/dblink/sql/dblink.sql

contrib/earthdistance/sql/earthdistance.sql

contrib/intarray/sql/_int.sql

contrib/ltree/sql/ltree.sql

contrib/pgcrypto/expected/blowfish.out

contrib/pgcrypto/expected/crypt-blowfish.out

contrib/pgcrypto/expected/crypt-des.out

contrib/pgcrypto/expected/crypt-md5.out

contrib/pgcrypto/expected/crypt-xdes.out

contrib/pgcrypto/expected/hmac-md5.out

contrib/pgcrypto/expected/hmac-sha1.out

contrib/pgcrypto/expected/md5.out

contrib/pgcrypto/expected/rijndael.out

contrib/pgcrypto/expected/sha1.out

contrib/pgcrypto/sql/blowfish.sql

contrib/pgcrypto/sql/crypt-blowfish.sql