[gtk+] (6 commits) Non-fast-forward update to branch wip/baedert/drawing

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/drawing' 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:

  d070a72... paned: Draw handle separator at the right location
  cf72784... widget: Transform clips into right coordinate space

Commits added to the branch:

  d672daf... paned: Draw handle separator at the right location
  34977ed... widget: Transform clips into right coordinate space
  01025ed... toolitem: Remove size_allocate implementation
  27caee8... pathbar: Compute widget clip directly
  b18ebcc... spinner: Use get_content_size
  25bef80... widget: Remove _set_simple_clip