backport: re PR fortran/86421 (OpenMP declare simd linear ref in module causes gfortr...

backport: re PR fortran/86421 (OpenMP declare simd linear ref in module causes gfortran to bail out)

	Backported from mainline
	2018-07-10  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/86421
	* module.c (omp_declare_simd_clauses): Add LINEAR with _REF, _VAL and
	_UVAL suffixes.
	(mio_omp_declare_simd): Save and restore ref, val and uval modifiers
	on linear clauses.  Initialize n->where to gfc_current_locus.

	* gfortran.dg/vect/pr86421.f90: New test.

From-SVN: r265106