XZ upstream thinks about switching from PD to 0BSD.

[Sebastian Andrzej Siewior <sebastian@breakpoint.cc>]

Hi,

the XZ upstream project thinks about changing the license from Public
Domain to BSD Zero clause license:
	https://github.com/tukaani-project/xz/issues/79

I *think* the PD "license" has no copyright and this isn't an issue for
Debian. 
Could someone please comment on behalf of the Debian Project?

Sebastian