When building releases, the definitive canonical version of podman (or
podman-remote) is needed. Previously this was accomplished by scraping
`version/version.go`. However, due to tooling differences across
platforms, this has proven problematic, unreliable, and hard to
maintain.
Fix this by building and caching a small golang binary who's only purpose
is to print the version number to stdout. This not only provides a quick
and reliable way to determine the current version, it also acts as a check
on the version API vs tooling that relies on it.
Lastly, remove several `RELEASE_*` Makefile definitions which aren't
actually used anywhere. These were originally added a very long time
ago to serve as part of a long since retired release process. The
remaining items, were updated to make use of the new `.podmanversion`
binary on an as-required basis (i.e. not every time `make` is run).
Signed-off-by: Chris Evich <cevich@redhat.com>
