[Firebird-docs] Copyright

[Robert J M. <rj...@ar...>]

I think the current copyright regime for the docs looks a bit 
unmanageable. I would have something like this:

* By contributing to the documentation project, you are automatically 
granting the firebird foundation a non-exclusive, perpetual license to 
use it however they wish.
* The foundation agrees to release your contribution to the world under 
a creative commons attribution, sharealike license, and may release it 
under other licenses in future 
(http://creativecommons.org/licenses/by-sa/1.0/)
* In certain cases, you may contribute material that you do not have 
full copyright ownership over. In these cases, you must mark the 
contribution with an XML tag so that it can be identified by the 
foundation, and they will be able to abide by the license terms. The 
cases are as follows:
 - Postgresql documentation license
 - (add others)

Robert Munro