[gnome-boxes] (7 commits) Non-fast-forward update to branch wip/preferences-dialog

[Felipe Borges <felipeborges src gnome org>]

The branch 'wip/preferences-dialog' 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:

  2945891... preferences: Introduce the new preferences dialog

Commits added to the branch:

  2f16e84... doap: Update Maintainers list (*)
  88d7e07... doap: Add Boxes' authors with <author> tags (*)
  12af061... machine-properties: Fix typo in preprocessor directive name (*)
  b5504dc... docs: Remove obsolete files (*)
  a76643a... HACKING: Update HACKING file content and format (*)
  ea22692... HACKING, README: Fix content duplication (*)
  2c2718d... preferences: Introduce the new preferences dialog

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