[nautilus] (7 commits) Non-fast-forward update to branch wip/exalm/libhandy

[António Fernandes <antoniof src gnome org>]

The branch 'wip/exalm/libhandy' 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:

  6f001c6... window: Port to AdwTabView and AdwTabBar
  a69ec97... window: Close window when closing last tab

Commits added to the branch:

  5f5314d... window: Don't create slot on construction
  f7759c9... window: Add slot in a single path
  9cae4e8... window: Simplify slot cleanup
  4e9c3a7... window: Refine slot removal code
  80bd61b... window: Remove "dnd-window-slot" hack
  e8bf7e4... window: Port to AdwTabView and AdwTabBar
  db2b14a... window: Close window when closing last tab