libgfortran.h (GFC_REAL_*_HUGE, [...]): Remove.

	* libgfortran.h (GFC_REAL_*_HUGE, GFC_REAL_*_DIGITS,
	GFC_REAL_*_RADIX): Remove.
	* mk-kinds-h.sh: Define GFC_REAL_*_HUGE, GFC_REAL_*_DIGITS and
	GFC_REAL_*_RADIX. Don't define GFC_REAL_LARGEST_FORMAT and
	GFC_REAL_LARGEST.

From-SVN: r129636