[PATCH] cygport/mirrors: add invisible-island mirrors

[Jon Turney]

On 16/12/2025 21:35, Brian Inglis via Cygwin-apps wrote:
> Hi folks,
> 
> I maintain a few apps from invisible-island.net (Thomas Dickey) as do 
> others, and as they now offer a mirror as well as primary archive site, 
> it would be easier if we could default package downloads to the mirror 
> and fall back to the primary site.
> 
> The attached patch documents and implements invisible-island mirrors as 
> ii although say invisible could be used instead if something longer was 
> preferred.

'ii' and 'invisible' don't mean that much to me, so I chose 
'invisibleisland'

I apologize for making you do more typing! :)

Applied. Thanks!