[tz] Data loss on FTP Server

[Paul.Koning at dell.com]

> On Oct 25, 2017, at 2:52 PM, Paul Eggert <eggert at CS.UCLA.EDU> wrote:
> 
> On 10/24/2017 05:38 PM, Kim Davies wrote:
>> Is retrieving old versions of the tzdb a common use case?
> 
> Reasonably common, at least for software archaeologists. I would do it all the time if I didn't have the old versions already cached. Though I'm not a typical user....
> 
> If the 2017c release is here:
> 
> https://www.iana.org/time-zones/repository/releases/tzdb-2017c.tar.lz
> 
> then one might expect this URL to list all the releases:
> 
> https://www.iana.org/time-zones/repository/releases/
> 
> Could we get this to work?

That would be good, but it wouldn't solve what is needed for automated tools that do these things, since HTTP index listings are not (sanely) program-parseable.

	paul