MSSDK61 in windows-amd64 build

[Tim Bell]

Hi Max-

>> Is there some reason you stay with v6.0A, rather than upgrading to
>> $(_program_files)/Microsoft SDKs/Windows/v6.1/  ?
> 
> No reason. 6.0a is the SDK that comes with VS2008, and I didn't  
> realize an upgrade is needed.

According to my notes, Kelly got a response from a program manager
at Microsoft saying that we should use this SDK on both 32 and 64-bit
Windows builds:

Windows SDK for Windows Server 2008 and .NET Framework 3.5
http://www.microsoft.com/downloads/details.aspx?FamilyId=F26B1AA4-741A-433A-9BE5-FA919850BDBF&displaylang=en


As far as I can tell, installing that will give you:
C:/Program Files/Microsoft SDKs/Windows/v6.1/ReleaseNotes.Htm

Although it is puzzling that the 3.5 does not line up with v6.1 elsewhere.

I am sure enough time has passed since then that we will need to take another
look at this.  I am trying to stabilize other parts of the build before
I reinstall on a clean machine to check what version(s) of the tool-chain
we must use.

Tim