mesa: Changes to 'gallium-draw-opti'

[Zack Rusin]

The branch, gallium-draw-opti has been created
        Commits at: http://cgit.freedesktop.org/mesa/mesa/log/?h=gallium-draw-opti

        at  ff288d531c87670fde52986b1c30eef5fd2468d3 (commit)

- Commits -----------------------------------------------
commit ff288d531c87670fde52986b1c30eef5fd2468d3
Author: Zack Rusin <zack at tungstengraphics.com>
Date:   Tue Mar 18 11:38:30 2008 -0400

    make the shaders return status signyfing whether clipping of vertices occured

commit 19848e99eff88ccb2e581421faa074a93ba14d0c
Author: Zack Rusin <zack at tungstengraphics.com>
Date:   Mon Mar 17 14:38:22 2008 -0400

    add disabled output of the bound shaders to softpipe

commit 377f223c2885e4eb937b63605c5c14f1e0ff8c97
Author: Zack Rusin <zack at tungstengraphics.com>
Date:   Mon Mar 17 13:07:32 2008 -0400

    pass arbitrary number of vertices to the shader execution cycle

commit 037c93211048b7002ba8f3a1b9b858fa0e91a7a7
Author: Zack Rusin <zack at tungstengraphics.com>
Date:   Mon Mar 17 08:35:53 2008 -0400

    introduce a define to maxout the processed vertices

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