[gtk+] (16 commits) Created branch treeview-refactor-staging

[Tristan Van Berkom <tvb src gnome org>]

The branch 'treeview-refactor-staging' was created.

Summary of new commits:

  ae7ee7f... Removed all variables from GtkTreeViewColumn and created Gt
  994d22b... Removed the private sharing of internal treeview macros fro
  8bf4749... Removed GtkTreeViewPrivate from gtktreeprivate.h and added 
  105ecf4... Changed _gtk_tree_view_column_set_width for _gtk_tree_view_
  ff145e1... Use gtk_tree_view_get_real_requested_width_from_column() al
  5e9f02d... Created _gtk_tree_view_column_request_width().
  93fbc79... Allocate proper inner cell area to the GtkTreeViewColumn.
  95995a1... Changed GtkTreeView to bookkeep the deepest expanded depth 
  4e7295f... Fixed GtkTreeViewColumn allocation to only subtract the dep
  1a98534... Added GtkTreeViewColumn:cell-area construct-only property.
  52be6d2... Removing hack and fixing gtk_tree_view_column_cell_get_size
  3e58e9d... Adding testverticalcells.c.
  f74b318... Fixed conflicts from rebasing GtkTreeViewColumn changes fro
  52d4a8c... Added different icon at the end of testtreeedit to see if R
  9cdc1b1... Added g_getenv("RTL") to test rtl layouting.
  0f428ca... Added proper handling of right to left layouting of cells t