* ldgram.y (%union): Add phdr field.

	* ldgram.y (%union): Add phdr field.
	(phdr): Use phdr_qualifiers rather than opt_hdrs and opt_at.
	(phdr_qualifiers): New nonterminal.  Add support for FLAGS.
	(opt_hdrs, hdr): Remove.
	(phdr_val): New nonterminal.
	* ldlang.c (lang_new_phdr): Replace hdrs parameter with filehdr
	and phdrs parameters.  Add flags parameter.
	(lang_record_phdrs): Update for changes to lang_phdr.  Pass flags
	to bfd_record_phdr.
	* ldlang.h (struct lang_phdr): Replace hdrs field with filehdr and
	phdrs fields.  Add flags field.
	(LANG_PHDR_FILEHDR, LANG_PHDR_PHDRS): Remove.
	(lang_new_phdr): Update declaration.
	* ld.texinfo: Document FLAGS.