Requiring SSE2 on Windows

[Michael Stahl]

On 07.05.20 01:06, Thorsten Behrens wrote:

> The original proposal was asking for Windows - and it appears that is
> not controversial.
> 
> Most of the benefits for the project (dropping custom patches for
> externals) might then not materialise for the moment, but hey.

actually i'm not aware of a patch being required for non-MSVC builds 
because only MSVC builds tend to use weird build systems that don't 
respect CFLAGS.