* elf-bfd.h (bfd_elf_section_data): Add rel_count and rel_count2

	* elf-bfd.h (bfd_elf_section_data): Add rel_count and rel_count2
	fields.
	(_bfd_elf_init_reloc_shdr): New function.
	* elf.c (_bfd_elf_new_section_hook): Use bfd_zalloc, rather than
	bfd_alloc followed by memset.
	(_bfd_elf_init_reloc_shdr): New function, split out from ...
	(elf_fake_sections): Here.
	(assign_section_numbers): Assign section numbers for the second
	relocation section, if required.
	* elflink.h (elf_link_output_relocs): New function.
	(elf_link_size_reloc_section): Likewise.
	(elf_bfd_final_link): Use elf_link_size_reloc_section.
	(elf_link_input_bfd): Use elf_link_output_relocs.
	* elf32-mips.c (_bfd_mips_elf_fake_sections): Use
	_bfd_elf_init_reloc_shdr to initialize rel_hdr2.