[gtk] (34 commits) Non-fast-forward update to branch wip/nirbheek/gtk-3-24-meson

[Nirbheek Chauhan <nirbheekc src gnome org>]

The branch 'wip/nirbheek/gtk-3-24-meson' 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:

  b888588... Import meson build files from an 3.22
  40f45a9... tests: Include system headers appropriately
  92cd253... meson: Sync build files with master and update to 3.24
  e5347ef... gtk-launch: Fix compilation with MSVC
  7f8b0d9... meson_options.txt: Disable introspection by default
  c5918f2... meson: Disable X11 support on Darwin
  663f88c... gtk: Fix paste/clipboard usage on macOS
  0ea2bbe... meson: Build fixes for macOS
  d059f0a... meson: Disable --export-dynamic for clang
  1a7c815... Temporarily disable CI to avoid using up jobs
  5c1873f... meson: Set the compatibility version correctly on macOS
  5b8321f... meson: Add fallback subprojects for more dependencies
  ccd2dca... gtk: Fix compiler warning about deprecated declaration
  a4a4366... meson: Disable discarded-qualifiers warning
  b8298ba... meson: Don't target gnu89 as the c_std
  e0e46cc... meson: Fix introspection generation on Linux

Commits added to the branch:

  ffde7d7... Adwaita: help fullcolor app icons (*)
  0271471... Adwaita: app icon shadow fix (*)
  3312d78... (#1471): base64-encode included SVGs to avoid mis-escaped c (*)
  1dd0b8e... Merge branch 'escape-included-svg' into 'gtk-3-24' (*)
  00556bd... Adwaita: buttons & headerbars (*)
  9b9b15c... Adwaita: tune button & hederbar colors (*)
  a386bc9... Adwaita: flatten the headerbar again (*)
  96f0b54... Adwaita: sync headerbar styling for devel mode (*)
  4cceccd... Adwaita: headerbar backdrop state (*)
  9a8f92f... Adwaita: button tweaks (*)
  8e3541b... Adwaita: active state for dark buttons (*)
  e68e75c... Adwaita: unbreak icon-shadow again (*)
  ea7a7e0... Adwaita: shade buttons (*)
  be75460... Adwaita: updated switch control (*)
  aac3819... Force emoji presentation (*)
  5a23c0f... GDK W32: set default settings for fontconfig (*)
  2de5572... Merge branch 'win32-fontconfig-defaults' into 'gtk-3-24' (*)
  b74e320... emoji chooser: Actually force Emoji presentation (*)
  2783949... Import meson build files from an 3.22
  1e22c89... tests: Include system headers appropriately
  c45240d... meson: Sync build files with master and update to 3.24
  2334595... gtk-launch: Fix compilation with MSVC
  cfe7451... meson_options.txt: Disable introspection by default
  4bf4b36... meson: Disable X11 support on Darwin
  34411e2... gtk: Fix paste/clipboard usage on macOS
  0584a24... meson: Build fixes for macOS
  f4fa116... meson: Disable --export-dynamic for clang
  8b45cea... Temporarily disable CI to avoid using up jobs
  37d554c... meson: Set the compatibility version correctly on macOS
  eb62f35... meson: Add fallback subprojects for more dependencies
  af39383... gtk: Fix compiler warning about deprecated declaration
  78ecbc3... meson: Disable discarded-qualifiers warning
  139ee9c... meson: Don't target gnu89 as the c_std
  a6b490c... meson: Fix introspection generation on Linux

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