• Fix check for an invalid path. crun was performing the wrong check to validate a path, causing spurious failures at runtime.
• Allow deleting a container while in created state. It goes against what the OCI runtime specs dictate, but it is the expected
  behavior since runc allows it.
• Fix regression when joining a container that has explicit paths for the namespaces.
• cgroup: do not set cpu limits if number of shares is set to 0. Moby uses 0 to indicate no limits.
• Fix build issues when configured with --enable-shared.
• Fix build on systems where OPEN_TREE_CLOEXEC is not defined.
• Improve diagnostics for errors returned by dbus.