[Bug-gnubg] SSE2 support in distributed windows binaries

[Ingo Macherius]

The release date of 20090721 suggests that the windows binaries distributed on 
the gnubg web site may already support Oystein's SSE2 sigmoid code. On my Linux 
compile this code speeds up calibration by about 10%, nice job.

However, the binary on the gnubg.org site neither speeds up calibrate on 
Windows (Vista) for me, nor does "show buildinfo" report "SSE/SSE2 supported." 
as my Linux compile does. It only reports "SSE supported.".

Is this intended, or was SSE2 support accidentially left out from the Windows 
build? If so, please consider releasing an SSE2 enabled version :)

Cheers,
Ingo