[gtk] (10 commits) ...Merge branch 'columnview-reorder-cells' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  0f81b58... columviewlayout: Skip children when we should (*)
  2a6dc67... gtk-demo: Improve wrapping in settings demo (*)
  9e55cd6... columview: Make cells propagate request mode (*)
  11a18bd... columnview: Take column width into account for measuring (*)
  f6da324... columnview: Split gtk_column_view_allocate_columns (*)
  40f6a9d... columnviewlayout: Handle for_size propertly (*)
  15c6ad8... listitemwidget: Add api to reorder children (*)
  6df489d... columnviewcolumn: Add private api to set the position (*)
  f631e0e... columnview: Update column positions on reordering (*)
  185f018... Merge branch 'columnview-reorder-cells' into 'master'

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