* nm.c (HAVE_SBRK): Define execpt on amigados and WINDOWS_NT.

	* nm.c (HAVE_SBRK): Define execpt on amigados and WINDOWS_NT.
	(struct size_sym): Define.
	(show_stats): New static variable.
	(long_options): Add undocumented option "stats".
	(main): Print memory stats if requested.
	(sort_bfd, sort_dynamic, sort_x, sort_y): New static variables.
	(numeric_forward): Use minisymbols rather than asymbols.
	(non_numeric_forward): Likewise.
	(size_forward1): Rename from size_forward.  Use minisymbols.
	(size_forward2): New static function.
	(sort_symbols_by_size): Take new arguments dynamic, size, and
	symsizep.  Use minisymbols.  Don't store the size back in the
	symbol; store in a newly allocate struct size_sym array.
	(display_rel_file): Read minisymbols rather than asymbols.  Set
	sort_* variables.  Call print_size_symbols if sorting by size.
	(filter_symbols): Take new arguments dynamic and size.  Use
	minisymbols.
	(print_symbols): Likewise.  Call print_symbol for actual printing.
	(print_size_symbols): New static function.
	(print_symbol): New static function.
PR 5332.