[pull] fixes and first set of new API changes

[Keith Packard]

Dave Airlie <airlied at gmail.com> writes:

>       xf86: add helper functions to convert to from ScrnInfoPtr/ScreenPtr

I sent some comments about this one today; please take a look and let me
know what you think. I'll wait for your reply before merging any of
these patches.

-- 
keith.packard at intel.com
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