* elfcode.h (elf_swap_ehdr_out): Adjust value written for e_shnum

	* elfcode.h (elf_swap_ehdr_out): Adjust value written for e_shnum
	and e_shstrndx if out of range.
	(elf_object_p): Read extended values for e_shnum and e_shstrndx
	from the first section header.  Allocate space in elf_elfsections
	for reserved sections and set to NULLs.
	(elf_write_shdrs_and_ehdr): Set overflow fields in first section
	header.  Skip reserved sections in elf_elfsections.  Remove
	duplicate size calculation.