[Xcb] Usage of XCB tutorial for derivative works

[Vincent Torri]

On Wed, 10 Dec 2008, Barton C Massey wrote:

> Vincent Torri is the original author of the XCB tutorial,
> and has done a lot of the work on it, so it would probably
> be best to chat with him first.  From my point of view, I'd
> say use as much as you want as long as it is properly
> credited.

do what you want with the tutorial. Just mention that it is based on my 
work. Note that the xcb tutorial is also based on another work. See the 
reference at the first line of the tutorial.

Vincent