[tz] Use or Apply for SPDX Licence

[Paul Eggert]

On 6/20/20 1:45 PM, Paul.Koning at dell.com wrote:
> Why is anything needed here?

I guess it's for some sort of packaging software that wants to see a LICENSE
file containing a bunch of strings like "CC-PDDC" and "BSD-3-Clause". Or maybe
these strings would need to be in every source file? It's not clear.

It would be helpful to know more details. What is the packaging software? How
does that software work with tzdb now? Why would the change (whatever it is)
save everybody time?

If the IETF has a task force on this topic, perhaps we should wait for it to
come to a conclusion before worrying about the issue.