- A new acceleration method "sna" that aims to be faster and
    consume far less CPU than UXA is now available for selection at runtime.
- Bug fixes for UXA:
  + Use a white source whilst adding glyphs to the glyph mask
    (This fixes blank glyphs if using a font that mixes ARGB and A glyphs.)
  + Avoid fallbacks for glyph-to-dst in e.g. gnome-terminal
    https://bugs.freedesktop.org/show_bug.cgi?id=50508
  + Force unused outputs off when VT switching
    https://bugs.freedesktop.org/show_bug.cgi?id=50772
  + Copy the fbcon across to the Screen pixmap at startup.
    (This patch has been kicking around in the distributions for years.)
  + Many missed malloc failures checks and forgotten frees found by a static
    analyzer. Thanks Zdenek Kabelac!
  + Leak of the back buffer when terminating an application after pageflipping
    https://bugs.freedesktop.org/show_bug.cgi?id=50670
  + Double check that the pipe is on before emitting a WAIT_ON_EVENT.
    In conjunction with an uptodate kernel, this should eliminate any
    hangs when changing resolutions or adding/removing displays.
    https://bugs.freedesktop.org/show_bug.cgi?id=50668
  + Update to new Xorg APIs. Future proofing for the next generation of
    hotplug Xorg display servers.

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