mips64 elf64 reloc data structures

[Roland McGrath]

> Should I move this into mips-specific code, to avoid ``polluting'' the
> global code with this?  

Yes.

> I suppose (and hope) defining these in mips/elf.h might be able to get me
> around the problem.

That won't work.  elf.h is not a sysdeps header.  I think you should make
sure that every place for which these macros matter uses <ldsodefs.h> and
do it in mips/ldsodefs.h instead.