[Piglit] [PATCH] util: Add include guards in piglit-util.h.

[Brian Paul]

On 05/14/2012 07:41 PM, Vinson Lee wrote:
> Solaris Studio does not support "#pragma once".
>
> Fixes build with Solaris Studio.
>
> Signed-off-by: Vinson Lee<vlee at freedesktop.org>

Reviewed-by: Brian Paul <brianp at vmware.com>