[libgweather] (5 commits) ...yrno: Fix forecasts never being available because invalid

[Bastien Nocera <hadess src gnome org>]

Summary of changes:

  deafa3e... tests: Print providers that we're setting when testing weat (*)
  6c9af6d... tests: Set providers before network access is made (*)
  2c670ed... tests: Better weather debugging data (*)
  5240f2f... metar: Don't mark weather info as invalid if already valid (*)
  d45d5a8... yrno: Fix forecasts never being available because invalid (*)

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