Adapt instructions to VS2013 and 64-bit Cygwin
Change-Id: Ie6b7ccd3e3a6d459cb44e4d545ceaf4eb26c06bb
diff --git a/configure.ac b/configure.ac
index c7cd156..f9bd9d0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12836,8 +12836,9 @@ place yourself in a working directory of you choice.
git clone git://git.savannah.gnu.org/make.git
[go to Start menu, click on "VS2012 x86 Native Tools Command Prompt"]
[go to Start menu, click "All Programs", click "Visual Studio 2013", click "Visual Studio Tools", double-click "VS2013 x86 Native Tools Command Prompt" or "VS2013 x64 Native Tools Comand Prompt"]
set PATH=%PATH%;C:\Cygwin\bin
[or Cygwin64, if that is what you have]
cd .../path/to/make_git
build_w32.bat --without-guile
