Gummiboot: Switch to zip archive.

For some reason tarballs from cgit have a different hash each time you download.
Merge commit 'refs/top-bases/experimental/overlays' into experimental/overlays

# By Shea Levy
# Via Shea Levy
* commit 'refs/top-bases/experimental/overlays':
  Gummiboot: Switch to zip archive.
Merge branch 'experimental/overlays' into refs/top-bases/experimental/hack-nix

# By Shea Levy
# Via Marc Weber (1) and Shea Levy (1)
* experimental/overlays:
  Gummiboot: Switch to zip archive.
Merge branch 'experimental/overlays' into refs/top-bases/experimental/updates

# By Shea Levy
# Via Marc Weber (1) and Shea Levy (1)
* experimental/overlays:
  Gummiboot: Switch to zip archive.
Merge commit 'refs/top-bases/experimental/hack-nix' into experimental/hack-nix

# By Shea Levy
# Via Marc Weber (2) and Shea Levy (1)
* commit 'refs/top-bases/experimental/hack-nix':
  Gummiboot: Switch to zip archive.
Merge commit 'refs/top-bases/experimental/gimp-git' into experimental/gimp-git

# By Shea Levy
# Via Shea Levy
* commit 'refs/top-bases/experimental/gimp-git':
  Gummiboot: Switch to zip archive.
Merge branch 'experimental/hack-nix' into refs/top-bases/experimental/updates

* experimental/hack-nix:
Merge branch 'experimental/gimp-git' into refs/top-bases/experimental/updates

* experimental/gimp-git:
Merge commit 'refs/top-bases/experimental/updates' into experimental/updates

# By Shea Levy
# Via Marc Weber (7) and Shea Levy (1)
* commit 'refs/top-bases/experimental/updates':
  Gummiboot: Switch to zip archive.