* ldgram.y (PHDRS): New token.

	* ldgram.y (PHDRS): New token.
	(ifile_p1): Accept phdrs.
	(section): Accept phdr_opt at the end of the section definition.
	(phdr_op): New nonterminal.
	(phdrs, phdr_list, phdr, phdr_type, opt_hdrs, hdr): Likewise.
	* ldlex.l: Accept PHDRS.
	* ldlang.h (struct lang_output_section_phdr_list): Define.
	(lang_output_section_statement_type): Add phdrs field.
	(struct lang_phdr): Define.
	(LANG_PHDR_FILEHDR, LANG_PHDR_PHDRS): Define.
	(lang_new_phdr): Declare.
	* ldlang.c (lang_phdr_list): New static variable.
	(lang_output_section_statement_lookup): Initialize phdrs field.
	(lang_process): Call lang_record_phdrs.
	(lang_new_phdr): New function.
	(lang_section_in_phdr): New function.
	(lang_record_phdrs): New static function.
	* ld.texinfo: Document PHDRS.