Hi all,

This patch replaces manual swapping in synth_mult with std::swap.
Not much else to say about this. This code could arguably be refactored
a bit but that's another story.

I believe these are considered obvious at this point.
I'll apply it in 24 hours unless somebody objects

Tested aarch64-none-elf and bootstrapped on x86_64-linux-gnu.

Thanks,
Kyrill

2015-03-16  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

     * expmed.c (synth_mult): Use std::swap instead of manually
     swapping algorithms.