fortran: Add tests covering inline MINLOC/MAXLOC without DIM [PR90608]

fortran: Add tests covering inline MINLOC/MAXLOC without DIM [PR90608]

Add the tests covering the various cases for which we are about to implement
inline expansion of MINLOC and MAXLOC.  Those are cases where the DIM
argument is not present.

	PR fortran/90608

gcc/testsuite/ChangeLog:

	* gfortran.dg/ieee/maxloc_nan_1.f90: New test.
	* gfortran.dg/ieee/minloc_nan_1.f90: New test.
	* gfortran.dg/maxloc_7.f90: New test.
	* gfortran.dg/maxloc_with_mask_1.f90: New test.
	* gfortran.dg/minloc_8.f90: New test.
	* gfortran.dg/minloc_with_mask_1.f90: New test.