* elf.c (_bfd_elf_make_section_from_shdr): New function, based on

	* elf.c (_bfd_elf_make_section_from_shdr): New function, based on
	code repeated three times in bfd_section_from_shdr in elfcode.h.
	* libelf.h (_bfd_elf_make_section_from_shdr): Declare.
	* elfcode.h (bfd_section_from_shdr): Use new function
	_bfd_elf_make_section_from_shdr to create BFD sections.  If a
	reloc section does not use the main symbol table, or it is part of
	the process image, treat it as a normal section, not relocs.
	* elf32-mips.c (mips_elf_section_from_shdr): Use new function
	_bfd_elf_make_section_from_shdr.