i965: Add support for NV_conditional_render.

Since we lack hardware support for it, this is a simple matter of
checking _mesa_check_conditional_render at the entrypoints, and
suppressing it for the metaops where it doesn't apply.

Reviewed-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/relnotes-7.11.html b/docs/relnotes-7.11.html
index d223a0a..b57fe9b 100644
--- a/docs/relnotes-7.11.html
+++ b/docs/relnotes-7.11.html
@@ -51,6 +51,7 @@
 <li>GL_ATI_draw_buffers (all drivers)
 <li>GL_ATI_texture_compression_3dc (gallium drivers, swrast)
 <li>GL_ATI_texture_float (gallium, i965)
+<li>GL_NV_conditional_render (i965)
 <li>GL_NV_texture_barrier (gallium drivers)
 </ul>