The use of KIND, LEN, RE, and IM inquiry references for applicable intrinsic
types is valid only for suffienctly new Fortran standards.  Add appropriate
checks in the appropriate place.

2020-05-30  Harald Anlauf  <anlauf@gmx.de>

gcc/fortran/
	PR fortran/95373
	* primary.c (is_inquiry_ref): Move validity check of inquiry
	references against selected Fortran standard from here...
	(gfc_match_varspec) ...to here.

gcc/testsuite/
	PR fortran/95373
	* gfortran.dg/pr95373_1.f90: Adjust error messages.
	* gfortran.dg/pr95373_2.f90: Adjust error message.

(cherry picked from commit dd38c765a04d06c775134a135f68b18c3b7c9c78)