bug#14603: 24.3.50; Error while bootstrapping Emacs on Windows

[Eli Zaretskii]

> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Thu, 13 Jun 2013 01:53:08 +0400
> 
> I'm trying to bootstrap the current Emacs trunk in the environment that
> worked fine not too long ago, and I'm getting this error:
> 
> ...
> gcc  -std=gnu99 -DHAVE_CONFIG_H -I. -I/c/Users/gutov/vc/emacs-bzr/trunk/lib 
> -I../src -I/c/Users/gutov/vc/emacs-bzr/trunk/src    -mtune=pentium4   
> -DUSE_CRT_DLL=1 -I /c/Users/gutov/vc/emacs-bzr/trunk/nt/inc    -g3 -O2 
> -gdwarf-2 -MT u64.o -MD -MP -MF .deps/u64.Tpo -c -o u64.o u64.c
> mv -f .deps/u64.Tpo .deps/u64.Po
> gcc  -std=gnu99 -DHAVE_CONFIG_H -I. -I/c/Users/gutov/vc/emacs-bzr/trunk/lib 
> -I../src -I/c/Users/gutov/vc/emacs-bzr/trunk/src    -mtune=pentium4   
> -DUSE_CRT_DLL=1 -I /c/Users/gutov/vc/emacs-bzr/trunk/nt/inc    -g3 -O2 
> -gdwarf-2 -MT utimens.o -MD -MP -MF .deps/utimens.Tpo -c -o utimens.o 
> utimens.c
> mv -f .deps/utimens.Tpo .deps/utimens.Po
> gcc  -std=gnu99 -DHAVE_CONFIG_H -I. -I/c/Users/gutov/vc/emacs-bzr/trunk/lib 
> -I../src -I/c/Users/gutov/vc/emacs-bzr/trunk/src    -mtune=pentium4   
> -DUSE_CRT_DLL=1 -I /c/Users/gutov/vc/emacs-bzr/trunk/nt/inc    -g3 -O2 
> -gdwarf-2 -MT dup2.o -MD -MP -MF .deps/dup2.Tpo -c -o dup2.o dup2.c
> dup2.c:35:0: warning: "WIN32_LEAN_AND_MEAN" redefined [enabled by default]
> In file included from ../src/conf_post.h:32:0,
>                  from ../src/config.h:1840,
>                  from dup2.c:20:
> c:/Users/gutov/vc/emacs-bzr/trunk/nt/inc/ms-w32.h:145:0: note: this is the 
> location of the previous definition
> dup2.c:38:26: fatal error: msvc-inval.h: No such file or directory
> compilation terminated.
> Makefile:1428: recipe for target `dup2.o' failed

Something was wrong during the configure step, because lib/dup2.c is
not supposed to be compiled in the MinGW build.  My crystal ball says
that somehow the site file nt/mingw-cfg.site was not read by
configure.