Major whitespace cleanups and fix a potential oops.

The driver can now run with or without FB support.

won't even compile without it.

((Gaël Le Mignot)

Whether it works or not is unknown. I don't have the hardware.

Closes bugzilla #646

DMA histogramming. Be more careful about DMA page-list allocations,
and remove old and broken (not SMP-safe, and unused) DRM read(), write()
and poll() support.

This adds support for i830 interrupt handling, and new improved
lock context keying. See per-file comments for more detail, as this
commit sadly mixes up a few different things (that's what you get
for not tracking the changes at a fine enough granularity).

From:  GertJan Spoelman <kl@gjs.cc>

  OK, here is a new patch, I edited the old patch and took out the .ko's
  so now the extension is trimmed instead.

This adds the driver config files. (part 1)