* ld-mips-elf/reloc-1-{n32,n64,rel}.d: New tests.
* ld-mips-elf/reloc-2[ab].s: New source files.
* ld-mips-elf/reloc-2.{d,ld}: New test.
* ld-mips-elf/reloc-3[ab].s: New source files.
* ld-mips-elf/reloc-3-{r,srec}.d: New tests.
* ld-mips-elf/mips-elf.exp: Run them.