[Xcb] [proto] Remove XPrint, fix docu mistake, tighten schema

[Josh Triplett]

On Fri, Nov 22, 2013 at 11:26:48PM +0100, Daniel Martin wrote:
> Hi,
> 
> I've prepared a few patches for proto. They are not urgent and shouldn't
> block a 1.10 release.
> 
> 
> [proto 1/6] Remove XPrint extension
> 
> XPrint has been removed from Xorg 5 years ago. Is there any sane reason
> to keep it? Anything else than "we could poke our grandchildren at"?
> Though, removing it requires a removal in libxcb too. There it's enabled
> by default.

No, please do not remove XPrint from proto.  If you like, you could stop
building the corresponding libxcb extension library by default.
However, the protocol descriptions are also used for purposes such as
protocol decoding (e.g.  with wireshark), and decoding old traces ought
to keep working.

- Josh Triplett