[gtk] (55 commits) Non-fast-forward update to branch matthiasc/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/for-master' 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:

  2a6ac09... builder: Use a better name for templates
  98486c2... builder: Add profiler marks for parsing
  0ee48a8... profiler: Exit gracefully on SIGTERM

Commits added to the branch:

  2488830... x11: add support for _GTK_WORKAREAS_Dn (*)
  556a8a8... Merge branch 'wip/muktupavels/work-areas' into 'master' (*)
  bba5de7... Update POTFILES.skip (*)
  aef67bd... GtkIconTheme: Make the base GtkIconTheme threadsafe (*)
  3ac7e30... icon theme: Make GtkIconInfo cached data threadsafe (*)
  b96ab74... GtkIconInfo: Implement paintable (*)
  aefd844... GtkIconHelper use GtkIconInfo as paintable (*)
  c42977a... Convert trivial users of icon theme loading to use info as  (*)
  53c5427... Add gtk_icon_info_snapshot_with_colors() and use instead of (*)
  884e06a... icon theme: Add gtk_icon_info_download_texture() function (*)
  dbe0212... icons: Convert use of load() to download_texture() (*)
  afa6cc2... Break out cairo color matrix recoloring to gdk_cairo_image_ (*)
  6ffb54f... icon-theme: Add gtk_icon_info_download_colored_texture() (*)
  97b24b0... tests: Use gtk_icon_info_download_colored_texture instead o (*)
  71b3b54... icon-theme: Add async icon loader (*)
  317b395... icon-theme: Drop loading_themes recursion check (*)
  0d666f0... icon-theme: Use gtk_icon_theme_choose_icon_async in tests (*)
  6af4b6a... icon-theme: Drop all load() calls from GtkIconInfo (*)
  ab69d43... builder: Use a better name for templates (*)
  cb60c1b... builder: Add profiler marks for parsing (*)
  929d325... profiler: Exit gracefully on SIGTERM (*)
  6a15e91... Rename GtkIcon widget to GtkBuiltinIcon (*)
  e2f7786... icon-theme: Rename GtkIconInfo to GtkIcon (*)
  b087f9c... icon-theme: Drop the _for_scale() versions and always take  (*)
  1e6a825... icon-theme: Clean up locking (*)
  56ec748... icon theme: Actually don't block in gtk_icon_theme_choose_i (*)
  1be9322... icon theme: Actually use scale in choose_icon_async() (*)
  55db9d0... icon-theme: Only add theme load profiler mark if we actuall (*)
  d2f26b2... icon-theme: Improve profiler mark for icon loads (*)
  ff3e022... icon helper: Remove profiler mark (*)
  6a8001f... icon-theme: Preload default icon themes in thread (*)
  d1c6d78... GtkImage: Preload icons during css validation (*)
  2b20212... icon-theme: Fix indentation of matrix values (*)
  b227a2f... icon-theme: Use GtkSnapshot, not GdkSnapshot (*)
  ff0642b... icon-theme: Remove trailing whitespaces (*)
  f7cd2a7... Fix warnings in gdk gir build (*)
  2ec51b7... icon-theme: Update the docs (*)
  27799ba... Remove final references to "icon info" with just "icon" (*)
  5f8c2b5... indentation: fix various alignment issues (*)
  d1cd578... icon-theme: Add i/o priority to choose_icon_async() (*)
  c69327c... icon-theme: Show which icon loads are threaded in profile m (*)
  498ab6a... IconHelper: Only preload icons once (*)
  b67d582... GtkIconHelper: Preload icons for mapped widgets with higher (*)
  d478ae1... icon-theme: Avoid reentrancy issues while loading icon them (*)
  09ef67a... icon-theme: Add icon theme name in profiler mark (*)
  99c89d6... Merge branch 'icon-theme-rework' into 'master' (*)
  4071e1e... build: require sassc and drop generated .css files (*)
  a46f9af... Remove primary monitor api (*)
  c91c4b6... Merge branch 'kill-primary-monitor-2' into 'master' (*)
  f140b15... Merge branch 'meson-sassc-subproject' into 'master' (*)
  9f55377... Updated Spanish translation (*)
  0c5ba00... Update Karbi translation (*)
  6104c12... Build fix for GtkCssValues (*)
  09612a1... filechooser: Remove debug spew (*)
  7479564... modelbutton: Update a11y states

(*) This commit already existed in another branch; no separate mail sent