aowlup v0.1.0-alpha.2

Second packaged build of the manager. Fixes two bugs that the driver's first
release exposed — both invisible while the only released component happened to
have an asset named exactly like its binary.

• A pre-release is now found. install asked GitHub for /releases/latest,
  which excludes pre-releases, so a project whose only published build is an
  alpha answered 404 — reported as Not Found, which reads as "no such
  repository" for a repository that is public and does have a release.
• A component installs under its own name. The asset name carries the
  platform (aowlmony-linux-amd64) so one release can serve several; it was
  being written to disk under that name, while the resolver looks for
  <prefix>/bin/<tool> — so an install succeeded and then nothing could find it.
• aowlmony is a component. The driver is in the catalog as the driver
  slot, so aowlup install aowlmony works and a stranger ends up with something
  to compile with.
• shim no longer overwrites the binary it resolves to. A shim is named
  after the variant, and so is an installed binary, so for anything installed
  into ~/.aowl/bin they were the same file — writing it produced a script that
  resolved to itself, i.e. an infinite self-exec that presents as a hang.
• Registry healing. Links that still recorded the literal version "0.1.0"
  get a real one, and a link pointing at a repo that is gone is dropped, with
  both said out loud rather than silently rewritten.

Requirements. Linux x86-64, glibc ≥ 2.34 — the floor is in the .glibc
asset, and install.sh refuses rather than installing a binary this machine
cannot start.

sha256sum -c aowlup-linux-amd64.sha256