[glib] (7 commits) ...Merge branch 'wip/pwithnall/1954-dbus-keyring-handling' into 'master'

[Simon McVittie <smcv src gnome org>]

Summary of changes:

  6978a4f... tests: Fix a memory leak in gdbus-server-auth (*)
  6bf221c... tests: Isolate directory access for gdbus-server-auth test (*)
  f4dc46d... gdbusauthmechanismsha1: Fix return type in precondition gua (*)
  d6bab03... gdbusauthmechanismsha1: Fix keyring lock file permissions (*)
  ed81cbc... gdbusauthmechanismsha1: Fix race in keyring_acquire_lock() (*)
  6627714... gdbusauthmechanismsha1: Reduce syscalls from ensure_keyring (*)
  3b3026b... Merge branch 'wip/pwithnall/1954-dbus-keyring-handling' int

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