--with-sse2 by default (was: GCC version bikeshedding)

[Gerald Pfeifer]

On Sun, 20 Jul 2014, Geert Bosch wrote:
> Can we use the switch to 5.0, a supposedly stable C++11 ABI etc,
> also as an excuse to finally configure for --with-sse2 by default 
> for 32-bit x86? Maybe then we can finally retire PR 323 and its 
> dozens of duplicates...

I did not see a response to this, and think we should consider it.

Thoughts?

Gerald