Patch for the fact that all llvm python scripts are python 2.x compatible.

[Reid Kleckner]

This looks right to me.

Committed as r184732.


On Mon, Jun 24, 2013 at 4:59 AM, 罗勇刚(Yonggang Luo) <luoyonggang at gmail.com>wrote:

> Please take a view of this patch,
> This patch solved a problem that when both Python 2.x and Python 3.x
> installed on the Windows, the CMake detect the python 3.x executable.
>
>
>
> Force to use python 2.x series of python.
> Because under Win32, that's possible both Python 2.x and Python 3.x
> installed.
> and then FindPythonInterp will found python 3.x by default.
> So we use set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5 2.4)
> to force use 2.x series of Python if both Python 2.x and Python 3.x exist.
>
>
> --
>          此致
> 礼
> 罗勇刚
> Yours
>     sincerely,
> Yonggang Luo
>
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