[glib] (13 commits) Non-fast-forward update to branch gio-extension-point-help

[Matthias Clasen <matthiasc src gnome org>]

The branch 'gio-extension-point-help' 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:

  0383fd7... gio: Support "help" in extension point env vars
  47d46ee... Document "help" for extensions

Commits added to the branch:

  26c8b29... settings: Make the keyfile backend parameterless (*)
  5357a23... settings: Register the keyfile backend as extension (*)
  c63e3a4... settings: Add support for defaults to keyfile backend (*)
  2854522... settings: Prefer the keyfile backend when sandboxed (*)
  be10f19... Merge branch 'settings-portal' into 'master' (*)
  92b3f22... giomodule: Print the type of each default GIO module (*)
  5506de3... Merge branch '1523-network-monitor-debugging' into 'master' (*)
  a3157cc... Update POTFILES.in (*)
  4a49a31... Merge branch 'piotrdrag/update-potfilesles-190121' into 'ma (*)
  e6574b2... keyfile settings: Accept unquoted strings (*)
  3d9727c... Merge branch 'keyfile-backend-strings' into 'master' (*)
  df5b482... gio: Support "help" in extension point env vars
  8f71892... Document "help" for extensions

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