[gentoo-pms] License for code snippets included in PMS

[Ulrich Mueller]

The PMS document is relased under the CCPL-Attribution-ShareAlike-3.0
license. This may raise some issues for package managers that want to
use some of the included code snippets. Portage and paludis are
licensed under GPL-2, and pkgcore seems to be heading towards BSD.

Currently, most of the code snippets are short (under 10 lines) and
are probably not copyrightable. But this might change in future.

Could we put all code snippets under some unrestrictive license
please? Like CC0-1.0-Universal?

Ulrich