PR libfortran/37839
	* trans-io.c (gfc_build_io_library_fndecls): Decrease pad size back
	to 16 pointers plus 32 integers.  Don't use max integer kind
	alignment, only gfc_intio_kind's alignment.
	(gfc_trans_inquire): Only set flags2 if mask2 is non-zero.
	* ioparm.def: Fix order, bitmasks and types of inquire round, sign
	and pending fields.  Move u in dt before id.
	* io.c (gfc_free_inquire): Free decimal and size exprs.
	(match_inquire_element): Match size instead of matching blank twice.
	(gfc_resolve_inquire): Resolve size.

	* gfortran.dg/f2003_inquire_1.f03: New test.
	* gfortran.dg/f2003_io_1.f03: Remove xfail.
	* gfortran.dg/f2003_io_4.f03: Likewise.
	* gfortran.dg/f2003_io_5.f03: Likewise.
	* gfortran.dg/f2003_io_6.f03: Likewise.
	* gfortran.dg/f2003_io_7.f03: Likewise.

	* io/io.h (IOPARM_INQUIRE_HAS_ROUND, IOPARM_INQUIRE_HAS_SIGN,
	IOPARM_INQUIRE_HAS_PENDING): Adjust values.
	(st_parameter_inquire): Reorder and fix types of round, sign and
	pending fields.
	(st_parameter_43, st_parameter_44): Removed.
	(st_parameter_dt): Put back struct definition directly to u.p
	declaration.  Change type of u.p.size_used from gfc_offset to
	GFC_IO_INT.  Decrease back size of u.pad to 16 pointers and
	32 ints.  Put id, pos, asynchronous, blank, decimal, delim,
	pad, round and sign fields after the union.
	* io/inquire.c (inquire_via_unit, inquire_via_filename): Only read
	flags2 if it is defined.
	* io/transfer.c (read_sf, read_block_form, write_block): Cast
	additions to size_used to GFC_IO_INT instead of gfc_offset.
	(data_transfer_init): Clear whole u.p struct.  Adjust
	for moving id, pos, asynchronous, blank, decimal, delim, pad,
	round and sign fields from u.p directly into st_parameter_dt.
	(finalize_transfer): Don't cast size_used to GFC_IO_INT.
	* io/file_pos.c (st_endfile): Clear whole u.p struct.

From-SVN: r142111