[gtk+] (15 commits) Non-fast-forward update to branch wip/csoriano/pathbar-prototype

[Carlos Soriano Sánchez <csoriano src gnome org>]

The branch 'wip/csoriano/pathbar-prototype' 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:

  47bab49... Add GtkHidingBox
  5868774... Implement new GtkPathBar

Commits added to the branch:

  1b90ea1... Add GtkHidingBox
  e9a7088... Implement new GtkPathBar
  f3b9c9e... gtkhidingbox: use full variable names
  5a18a65... gtkhidingbox: reorder variables
  b003049... gtkhidingbox: reorder variables
  676221d... gtkhidingbox: we can assume we have min and nat pointers
  1c67403... gtkhidingbox: use the parameters directly
  9876c63... gtkhidingbox: use full variable names
  d623e6d... gtkhidingbox: assume we always have min and nat pointers
  ace3871... gtkhidingbox: use directly the parameters
  37f5da6... gtkhidingbox: use full variable names
  7cf2e67... remove when implemented ability to hide from the start
  5bffad1... gtkhidingbox: don't nest unneeded loop
  cea5afe... gtkhidingbox: use class_install_properties
  251e6dd... gtkhidingbox: remove unneeded comment