[libsecret] (9 commits) Non-fast-forward update to branch wip/dueno/backend

[Daiki Ueno <dueno src gnome org>]

The branch 'wip/dueno/backend' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  feac7db... secret-service: Move parent property setting to constructor
  4e4e437... secret-backend: New interface to represent password storage
  b516e4a... secret-service: Implement SecretBackendInterface
  4694173... secret-backend: Add a way to uncache singleton instance
  1eaade8... secret-password: Port to SecretBackend interface

Commits added to the branch:

  555407a... build: Bump meson_version to 0.50 (*)
  a4ea97d... build: Simplify pathname handling (*)
  c06c9d2... build: Simplify file substitution (*)
  e9f811e... Merge branch 'wip/dueno/meson' into 'master' (*)
  013aae4... secret-service: Move parent property setting to constructor
  7e42029... secret-backend: New interface to represent password storage
  642e0e7... secret-service: Implement SecretBackendInterface
  d75c82e... secret-backend: Add a way to uncache singleton instance
  4ae7f8b... secret-password: Port to SecretBackend interface

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