intrinsic.c (add_functions): Add SELECTED_CHAR_KIND intrinsic.

	* intrinsic.c (add_functions): Add SELECTED_CHAR_KIND intrinsic.
	* intrinsic.h (gfc_check_selected_char_kind,
	gfc_simplify_selected_char_kind): New prototypes.
	* gfortran.h (gfc_isym_id): Add GFC_ISYM_SC_KIND.
	* trans.h (gfor_fndecl_sc_kind): New function decl.
	* trans-decl.c (gfor_fndecl_sc_kind): Build new decl.
	* arith.c (gfc_compare_with_Cstring): New function.
	* arith.h (gfc_compare_with_Cstring): New prototype.
	* check.c (gfc_check_selected_char_kind): New function.
	* primary.c (match_string_constant, match_kind_param): Mark
	symbols used as literal constant kind param as referenced.
	* trans-intrinsic.c (gfc_conv_intrinsic_sc_kind): New function.
	(gfc_conv_intrinsic_function): Call gfc_conv_intrinsic_sc_kind.
	* intrinsic.texi (SELECTED_CHAR_KIND): Document new intrinsic.
	* simplify.c (gfc_simplify_selected_char_kind): New function.

	* intrinsics/selected_char_kind.c: New file.
	* Makefile.am: Add intrinsics/selected_char_kind.c.
	* Makefile.in: Regenerate.

	* gfortran.dg/selected_char_kind_1.f90: New test.
	* gfortran.dg/selected_char_kind_2.f90: New test.
	* gfortran.dg/selected_char_kind_3.f90: New test.

From-SVN: r134839