[libsecret] (5 commits) Non-fast-forward update to branch wip/nielsdg/gir-annotations

[Niels De Graef <nielsdg src gnome org>]

The branch 'wip/nielsdg/gir-annotations' 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:

  f8adb7c... Get rid of (allow-none) annotations
  2aabeb1... Mark optional GCancellables as (nullable)
  b328d97... Mark NULL with appropriate gtk-doc prefix

Commits added to the branch:

  7e3c56b... Use G_GNUC_NULL_TERMINATED where appropriate (*)
  e7214fa... Merge branch 'wip/nielsdg/null-terminated-annotations' into (*)
  402c9fb... Get rid of (allow-none) annotations
  41c8a82... Mark optional GCancellables as (nullable)
  82fe5da... Mark NULL with appropriate gtk-doc prefix

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