xserver-xorg: upgrade 1.20.7 -> 1.20.8

Bug fix point release for current stable branch

Adam Jackson (1):
      Revert "dri2: Don't make reference to noClientException"

Arthur Williams (1):
      dix: Check for NULL spriteInfo in GetPairedDevice

Daniel Llewellyn (1):
      os: Ignore dying client in ResetCurrentRequest

Dave Airlie (1):
      modesetting: remove unnecessary error message, fix zaphod leases

David Seifert (1):
      Fix building with `-fno-common`

Dor Askayo (1):
      xwayland: clear pixmaps after creation in rootless mode

Eric Anholt (1):
      glamor: Fix a compiler warning since the recent OOM fixes.

George Matsumura (1):
      Restrict 1x1 pixmap filling optimization to GXcopy

Jon Turney (2):
      Add xf86OSInputThreadInit to stub os-support as well
      Fix old-style definition warning for xf86OSInputThreadInit()

Jonas Ådahl (1):
      xwayland/glamor-gbm: Handle DRM_FORMAT_MOD_INVALID gracefully

Kenneth Graunke (1):
      configure: Define GLAMOR_HAS_EGL_QUERY_DRIVER when available

Maarten Lankhorst (1):
      modesetting: Disable atomic support by default

Matt Turner (1):
      xserver 1.20.8

Michel Dänzer (8):
      modesetting: Explicitly #include "mi.h"
      xfree86/modes: Bail from xf86RotateRedisplay if pScreen->root is NULL
      xwayland: Split up xwl_screen_post_damage into two phases
      xwayland: Call glamor_block_handler from xwl_screen_post_damage
      xwayland: Add xwl_window_create_frame_callback helper
      xwayland: Use single frame callback for Present flips and normal updates
      xwayland: Use frame callbacks for Present vblank events
      xwayland: Delete all frame_callback_list nodes in xwl_unrealize_window

Paul Kocialkowski (4):
      glamor: Propagate FBO allocation failure for picture to texture upload
      glamor: Error out on out-of-memory when allocating PBO for FBO access
      glamor: Propagate glamor_prepare_access failures in copy helpers
      glamor: Fallback to system memory for RW PBO buffer allocation

Signed-off-by: Wang Mingyu <wangmy@cn.fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 4e06262e)
Signed-off-by: Steve Sakoman <steve@sakoman.com>