pgindent run for 9.6

contrib/auto_explain/auto_explain.c

contrib/bloom/blinsert.c

contrib/bloom/bloom.h

contrib/bloom/blutils.c

contrib/bloom/blvacuum.c

contrib/file_fdw/file_fdw.c

contrib/isn/isn.c

contrib/pageinspect/heapfuncs.c

contrib/pg_trgm/trgm_gin.c

contrib/pg_trgm/trgm_gist.c

contrib/pg_trgm/trgm_op.c

contrib/pg_visibility/pg_visibility.c

contrib/pgcrypto/pgp.h

contrib/postgres_fdw/connection.c

contrib/postgres_fdw/deparse.c

contrib/postgres_fdw/option.c

contrib/postgres_fdw/postgres_fdw.c

contrib/postgres_fdw/postgres_fdw.h

contrib/sslinfo/sslinfo.c

contrib/test_decoding/test_decoding.c