[gtk] (12 commits) ...Merge branch 'matthiasc/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  8acd9ff... testsuite: Fix notify test no not fail on the 30th (*)
  0bb38b9... printjob: Drop the Private struct (*)
  40337aa... printunixdialog: Drop the Private struct (*)
  366b007... filechooserwidget: Drop the Private struct (*)
  ef32cff... spinbutton: Drop the Private struct (*)
  e2beb6e... levelbar: Drop the Private struct (*)
  03375b7... listbox: Drop the Private struct (*)
  d0b4f9e... notebook: Drop the Private struct (*)
  e05c1b0... colorchooserwidget: Drop the Private struct (*)
  0020b73... colorchooserdialog: Drop the Private struct (*)
  47982ae... coloreditor: Drop the Private struct (*)
  af749dc... Merge branch 'matthiasc/for-master' into 'master'

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