[patch] Set FPU defaults for -ffast-math on MIPS.

[Richard Sandiford]

> Could you give it a spin 64-bit GNU/Linux too?  I'd have expected...
>
>>       * config/mips/linux.h (ENDFILE_SPEC): New.
>>       * config/mips/linux64.h (ENDFILE_SPEC): New.
>
> ...this to trigger a redefinition error, since linux.h is included for
> 64-bit as well as 32-bit targets.  It would certainly be nice to only
> need the linux.h definition.

Duh, sorry, don't know how I missed the #undef.  But the point
about having only one definition still stands.

Richard