bfd/

	* elf32-mips.c (mips_elf_adjust_addend): New function, mostly split
	out from...
	(_bfd_mips_elf_relocate_section): ...here.  Use it to adjust r_addend
	for final links too.

ld/testsuite/
	* ld-mips/emit-relocs-1a.s, ld-mips/emit-relocs-1b.s,
	* ld-mips/emit-relocs-1.ld, ld-mips/emit-relocs-1.d: New test.
	* ld-mips/mips-elf.exp: Run it.