re PR fortran/64022 ([F2003][IEEE] ieee_support_flag does not handle kind=10 and kind=16 REAL variables)

	PR fortran/64022

	* simplify.c (gfc_simplify_ieee_selected_real_kind): Extend IEEE
	support to all real kinds.

	* ieee/ieee_exceptions.F90: Support all real kinds.
	* ieee/ieee_arithmetic.F90: Likewise.
	* ieee/ieee_helper.c (ieee_class_helper_10,
	ieee_class_helper_16): New functions
	* gfortran.map (GFORTRAN_1.7): Add entries.

	* gfortran.dg/ieee/ieee_7.f90: Adjust test.
	* gfortran.dg/ieee/large_1.f90: New test.

From-SVN: r226548