* ldlex.l: Recognize OVERLAY.

	* ldlex.l: Recognize OVERLAY.
	* ldgram.y: Add section_phdr field to %union.
	(section): Handle phdr_opt result.  Add OVERLAY case.
	(opt_exp_without_type): New nonterminal.
	(phdr_opt): Return list of phdrs.
	(overlay_section): New nonterminal.
	* ldlang.c: Include <ctype.h>.
	(lang_leave_output_section_statement): Add phdrs parameter.
	Change all callers.
	(lang_section_in_phdr): Remove.
	(overlay_vma, overlay_lmn, overlay_max): New static variables.
	(struct overlay_list): Define.
	(overlay_list): New static variable.
	(lang_enter_overlay, lang_enter_overlay_section): New functions.
	(lang_leave_overlay_section, lang_leave_overlay): New functions.
	* ldlang.h (lang_leave_output_section_statement): Update
	declaration for new parameter.
	(lang_section_in_phdr): Don't declare.
	(lang_enter_overlay, lang_enter_overlay_section): Declare.
	(lang_leave_overlay_section, lang_leave_overlay): Declare.
	* ld.texinfo (Overlays): New node under SECTIONS, documenting
	overlays.

	* ldlex.l: Recognize MAX and MIN.
	* ldgram.y (MAX, MIN): New terminals.
	(exp): Recognize MAX and MIN.
	* ldexp.c (fold_binary): Handle MAX and MIN.
	* ld.texinfo (Arithmetic Functions): Document MAX and MIN.

	* ld.texinfo (PHDRS): Use @cindex, not @kindex, for program header
	index entries.

	* ldgram.y (SIZEOF, ADDR): Do not specify type.