The packedpixels test runs with the xlib winsys, though not all cases look
correct yet.

It's state tracker specific / not really necessary anyway.

Add a 'CheckQuery()' driver callback to mesa to check query completion.
Make pipe_query an opaque type.
Rework softpipe queries, support overlapping occlusion queries.

We're hitting this with quite a few Mesa demos.

we just load text files instead of compiling tons of small
binaries

simply pass aligned arrays, they should cast to vectors without
any problems. also remove unnecessary memset

Pass the inputs/outputs pointer in the structure instead of infinitely
expanding arguments to the functions.

The effect of this mapping can be acheived by the state tracker and
setting up the pipe texture state pointers to incorporate its affects.

Something similar will return when geometry shaders are added, but for now
this interface is not required.

This is a squashed commit of i965 branch on
ssh://people.freedesktop.org/~zack/mesa
Because of the porting the branch often didn't compile so
squashing it makes more sense.
The port is still far from complete.

Including state_tracker/st_format.h from pipe drivers is not an option
since it uses GL* types and pipe/p_util.h will clash with main/imports.h.

This is a feeble first step, but it works.
The cell_clear_surface() function has been hijacked to set up a "draw triangle"
command and send it to all the SPUs.
The Gallium softpipe triangle code was copied to the SPU module and modified.
Only the progs/trivial/clear.c program runs.

The state setting code was mostly just copied from the softpipe driver.
The SPUs can now get/put framebuffer tiles from/to main memory and clear
them to a given color.  Lots of debug code in effect.
Tiled framebuffer is displayed in X window via the xmwinsys layer.
To enable Cell driver, export GALLIUM_CELL=1

Additional types may be added in the future.

intel_winsys works again.

These are useless or even harmful due to referencing symbols no longer
available in the Gallium build.