[gtk/glib-build-fix] (35 commits) ...togglebutton: Don't crash on click

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  d761e3c... Fix the build with cups < 2.3 (*)
  07166a5... gdksurface-win32.c: Deal with modal and decoration props (*)
  85706dc... gdkglcontext-win32.c: Create a global shared GL context (*)
  d6955d4... gskrenderer.c: Default to the GL renderer on Windows too (*)
  c979798... demos: Fix running on Visual Studio builds (*)
  20388f8... GDK-Win32: Use SetProcessDpiAwarenessContext() where availa (*)
  90eec67... Merge branch 'cups-build-fix' into 'master' (*)
  9564cba... gdk: Fix toplevel calculation on pointer grab switch (*)
  0d3fa01... Merge branch 'wip/carlosg/cursor-fallout' into 'master' (*)
  358f664... Merge branch 'master.win32' into 'master' (*)
  6ab13a6... gsk: Don't the always_inline function attribute (*)
  0dc6ee2... Merge branch 'dont-always-inline' into 'master' (*)
  1087ff4... Merge branch 'glib-build-fix' into 'master' (*)
  371cdf3... gdk/x11: Add annotations to improve GIR API (*)
  7a58a6a... gsk: Add annotations to improve GIR API (*)
  d1cab4f... gtk: Add annotations to improve GIR API (*)
  746a40b... Merge branch 'ricotz/for-master' into 'master' (*)
  d743e75... Update Catalan translation (*)
  bf24da0... inspector: Add a type check (*)
  954a144... mediastream demo: Add a weak pointer to the window (*)
  0822de1... textview: Only show "insert emoji" menu item if editable (*)
  ebaea07... inspector: Avoid some failing casts (*)
  547842e... window: Keep titlebar after main child (*)
  76f2396... popover: Use gtk_widget_add_css_class (*)
  b37b853... adwaita: Reset popover background in backdrop (*)
  f5af187... listbox: Add _append (*)
  2f65459... stack: Only compare page names if the new page has one (*)
  b489a1f... stack: Allow NULL names (*)
  e976825... button: Use g_object_notify_by_pspec() (*)
  65b79d2... Avoid refering to old GtkContainer API in the docs (*)
  415946e... togglebutton: Modernice source file (*)
  f716daa... aboutdialog: Fix a code sample (*)
  41b458f... Fix and improve various code samples (*)
  0b2833f... Merge branch 'wip/baedert/for-master' into 'master' (*)
  7466277... togglebutton: Don't crash on click

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