[CMake] License of Wiki code snippets is not Debian-compatible

Sun Apr 17 09:59:05 EDT 2011

The Creative Commons BY 2.5 license used on the Wiki is not compatible
with Debian. LLVM contains a macro taken from it and the Debian guys
filed a bug report:

http://llvm.org/bugs/show_bug.cgi?id=9739

They suggest upgrading to 3.0. CC also suggests using 3.0 instead of
2.5, see the bottom of

http://creativecommons.org/licenses/by/2.5/

Is it possible to upgrade the Wiki license to 3.0?