[Buildroot] buildroot snapshot

[Thiago A. Corrêa]

> I guess I am looking for confirmation that the snapshot contains
> specific versions of packages and patches, and these same ones will be
> used even if the snapshot is run at a later date.

Yes. Although sometimes packages vanish from their download sites for
whatever reason. In that case, you might be forced to bump versions or
update URLs in .mk files. That's unavoidable, unless you save/mirror
your download folder.