[gtk] (13 commits) ...Merge branch 'matthiasc/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  7e8d61b... menubutton: Drop the Private struct (*)
  1f808c4... aboutdialog: Drop the Private struct (*)
  06365cd... actionbar: Drop the Private struct (*)
  3296382... accellabel: Drop the Private struct (*)
  b14d99a... accellabel: Drop unused class fields (*)
  05891b1... settings: Drop the Private struct (*)
  4942711... statusbar: Drop the Private struct (*)
  28eb1fc... searchentry: Drop the Private struct (*)
  9287e0e... texthandle: Drop the Private struct (*)
  408dd37... infobar: Drop the Private struct (*)
  001d076... image: Drop the Private struct (*)
  ceef868... appchooserdialog: Drop the Private struct (*)
  2c7afc0... Merge branch 'matthiasc/for-master' into 'master'

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