[PULL to discuss] Remove kdrive, Xnest, and Xvfb

[Derek Fawcus]

On Mon, Mar 26, 2012 at 05:37:37PM -0700, Jamey Sharp wrote:
> Xvfb has -fbdir and -shmem options to allocate the framebuffer in a
> mmap'd file or a shared memory segment, respectively. Surely nobody
> cares? If somebody does, patches copying the code from Xvfb to
> xf86-video-dummy should be easy to write.

Actually,  I cobbled some code together in the last few months that
is making use of Xvfb -fbdir,  this was to run a Window'ed xserver
on OSX.

I wanted to avoid the double translation inherent in using vnc,  and
didn't want to have 2 Xservers running (which using Xnest / Xephyr would
have involved).

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