Merge with Debian 3.23.2-1

This bug was fixed in the package gtk+3.0 - 3.23.2-1ubuntu1

---------------
gtk+3.0 (3.23.2-1ubuntu1) cosmic; urgency=medium

  * Merge from Debian experimental (LP: #1787378). Remaining changes:
    + Install a settings.ini file to set our themes
    + Update debian/libgtk-3-0.symbols
    + debian/control.in:
      - Build-depend on adwaita-icon-theme-full for icon name check test
    + debian/rules: Mark additional known test failures:
      - box-shadow-changes-modify-clip.ui
      - label-text-shadow-changes-modify-clip.ui
    + Ubuntu-specific patches:
      - 073_treeview_almost_fixed.patch
      - bzg_gtkcellrenderer_grabbing_modifier.patch
      - ubuntu_gtk_custom_menu_items.patch
      - print-dialog-show-options-of-remote-dnssd-printers.patch
      - uimanager-guard-against-nested-node-updates.patch
      - x-canonical-accel.patch
      - message-dialog-restore-traditional-look-on-unity.patch
      - 0001-gtk-reftest-Force-icon-theme-to-Adwaita.patch
      - restore_filechooser_typeaheadfind.patch
      - 0001-calendar-always-emit-day-selected-once.patch
      - 0001-gtkwindow-set-transparent-background-color.patch
      - unity-border-radius.patch
      - unity-headerbar-maximized-mode.patch

 -- Andrea Azzarone <email address hidden> Thu, 16 Aug 2018 12:28:33 +0300