msvc-inval.h?

[Stephen Leake <stephen_leake@stephe-leake.org>]

I'm building emacs on Windows for the very first time.

dup2.c and other files requires msvc-inval.h, which is not on my system,
and is not mentioned in nt/INSTALL.

I'm guessing it's a header for the Microsoft Visual C++ runtime library.

I can't figure out where to get that from. 

The Microsoft support knowledge base says how to download the runtime
library itself (http://support.microsoft.com/kb/259403), but not where
to get the dev package. The implication is they assume I'm using the 
Microsoft Visual C++ IDE.

Is there some standard place to get the dev package for open source use?

-- 
-- Stephe