Always multi-arch the SPARC, dump sparclet?

[Andrew Cagney]

Hello,

The SPARC target has a number of variants that don't yet build with 
multi-arch enabled (e.g., sparc-elf).

I'd like to propose that the switch simply be thrown and any 
non-multi-arch code be ripped out.  Acceptance criteria for such a 
change being simply `it still builds'.

This shouldn't affect things like GNU/Linux, which, I believe, do 
already build with multi-arch enabled.

This will, however, affect non-nulti-arch SPARC targets such as the 
sparclet potentially leading to breakage.

Thoughts?

Andrew