[gnome-software] (8 commits) ...Remove the concept of a shared global app cache

[Richard Hughes <rhughes src gnome org>]

Summary of changes:

  6e73917... Do not use the global cache in the search provider (*)
  5b30bae... trivial: Do not show critical warning if getting the os-rel (*)
  deae317... Match all the unique ID constraints when refining a wildcar (*)
  46cd0fa... os-release: Don't load the os-release file on every request (*)
  6261f42... trivial: Do not use the global cache directly in the self t (*)
  9d09268... trivial: Do not use the global cache when showing the plugi (*)
  a550090... trivial: Always set a package name on the example AppStream (*)
  9198056... Remove the concept of a shared global app cache (*)

(*) This commit already existed in another branch; no separate mail sent