* ldlex.l (DATA_SEGMENT_ALIGN, DATA_SEGMENT_END): New tokens.

	* ldlex.l (DATA_SEGMENT_ALIGN, DATA_SEGMENT_END): New tokens.
	* ldgram.y (DATA_SEGMENT_ALIGN, DATA_SEGMENT_END): New tokens.
	(exp): Add DATA_SEGMENT_ALIGN (exp, exp) and DATA_SEGMENT_END (exp).
	* ldexp.c (exp_data_seg): New variable.
	(exp_print_token): Handle DATA_SEGMENT_ALIGN and DATA_SEGMENT_END.
	(fold_binary): Handle DATA_SEGMENT_ALIGN.
	(exp_fold_tree): Handle DATA_SEGMENT_END.
	Pass allocation_done when recursing instead of hardcoding
	lang_allocating_phase_enum.
	* ldexp.h (exp_data_seg): New.
	* ldlang.c (lang_size_sections_1): Renamed from lang_size_sections.
	(lang_size_sections): New.
	* ld.texinfo (DATA_SEGMENT_ALIGN, DATA_SEGMENT_END): Document.
	* scripttempl/elf.sc: Use DATA_SEGMENT_ALIGN and DATA_SEGMENT_END
	if COMMONPAGESIZE is defined.
	* emulparams/elf_i386.sh (COMMONPAGESIZE): Set to 4K.
	* emulparams/elf32_sparc.sh (COMMONPAGESIZE): Set to 8K.
	* emulparams/elf64_sparc.sh (COMMONPAGESIZE): Set to 8K.
	* emulparams/elf64alpha.sh (COMMONPAGESIZE): Set to 8K.
	* emulparams/elf64_ia64.sh (COMMONPAGESIZE): Set to 16K for shared
	libraries only.