[Beignet] Fix compatibility with Python 2.6 [PATCH]

[Zhigang Gong]

This patch LGTM, just pushed, thanks.

On Thu, Feb 06, 2014 at 07:53:22PM +0100, Jon Nordby wrote:
> Hi,
> the following patch was necessary to get Beignet to compile on RHEL/CentOS 6.5 with Python 2.6.
> 


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