[x265] [PATCH 2 of 2] cmake: add build option for Windows to target Win7 to enable NUMA APIs

[Steve Borho]

On 04/13, Xinyue Lu wrote:
> Hi,
> 
> That's correct.
> 
> Per our discussion on IRC channel:
> 
> The NUMA API is only available on Win7 and above.
> 
> So either compiling against Win7 and you get the NUMA API, or
> compiling against Vista (or even XP) which doesn't come with NUMA
> support.

I've modified the patch locally to simplify the situation by targeting
Win7 (with NUMA) by default unless WINXP_SUPPORT is enabled. So Vista
gets glommed together with XP as a "legacy" O/S option.

-- 
Steve Borho