[Windows] Clarify Visual Studio usage instructions

[David Wiberg]

Hi Beman,

2013/9/9 Beman Dawes <bdawes at acm.org>:
> Patch for http://llvm.org/svn/llvm-project/www/trunk to clarify usage
> instructions.
>
> --Beman
>
> Index: builds/index.html
> ==============================
> =====================================
> --- builds/index.html    (revision 190279)
> +++ builds/index.html    (working copy)
> @@ -43,8 +43,10 @@
>
> href="https://address-sanitizer.googlecode.com/files/LLVM-3.4.r190202-win32.exe">mirror</a>),
>    based on SVN r190202.  </p>
>
> -  <p>To use the LLVM toolchain from Visual Studio, open project properties
> and
> -  change the "Platform Toolset" from the current value to "LLVM-vs2010"
> +  <p>To use the LLVM toolchain from Visual Studio, select a project in
> Solution
> +  Explorer, hit Alt+F7 to open its Property Page, then in the "General"
> section

Alt+F7 is a shortcut (like many other in Visual Studio) which depends
on the user having selected a certain keyboard mapping. I would
recommend rephrasing to either right-clicking and choosing
"Properties" or navigating via the "Project" menu.

/ David