[aur-general] license convention for public domain packages

[Allan McRae]

Abhishek Dasgupta wrote:
> There are widely varying methods for specifying the license of a
> public domain package in Arch Linux. We should standardise and
> use one of them. Some packages use
> - 'Public Domain' (unclutter, python-webpy)
> - 'PD' (ttf-mph-2b-damase)
> - I think some packages might also be using 'none'. I saw one
>   package using 'custom:public' (shuffle)
>
> Also, there is the question of whether we should have public domain
> declarations for each package in /usr/share/licenses or put a public
> domain declaration in /usr/share/licenses/common and refer to that.
>   

I think it should just be 'custom'.  There is no single public domain 
license so they also should be included in /usr/share/license/$pkgname.

Allan