[gtk] (28 commits) Non-fast-forward update to branch matthiasc/a11y

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/a11y' 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:

  e18e19b... a11y: Add the AT-SPI DBus descriptions
  851c0ee... a11y: Add dummy AT-SPI context
  68beef5... a11y: Add a display to GtkATContext
  7e21e82... a11y: Register the accessible root object
  027f739... a11y: Ignore widgets during destruction
  8471c67... a11y: Add AT-SPI cache object
  89ccccf... a11y: Return the ATSPI role for the root element
  81c612f... tests: Use the test ATContext for every test
  d61322c... atspicontext: Print out the a11y bus address
  6ba5ca6... atspiroot: Implement GetLocale
  ad07680... atspiroot: Implement more of the Accessible api

Commits added to the branch:

  43300b4... Tone down a user visible message (*)
  c835df5... docs: Add more details to the migration guide (*)
  e7aa103... gtk-demo: Ellipsize columns in the characters demo (*)
  eb64729... build: Require sysprof 3.38.0 (*)
  6a0704a... window: Be more careful when looking for focus (*)
  115ed00... Send focus events to the root (*)
  4c3eb7c... Merge branch 'ebassi/for-master' into 'master' (*)
  8fcd4ac... gtk-demo: Keep undisplayable resources out of view (*)
  758675f... Merge branch 'matthiasc/for-master' into 'master' (*)
  d44baf9... a11y: Add the AT-SPI DBus descriptions (*)
  1d103ad... a11y: Add dummy AT-SPI context (*)
  aa7feff... a11y: Add a display to GtkATContext (*)
  8293ea4... a11y: Register the accessible root object (*)
  7d1e36c... a11y: Ignore widgets during destruction (*)
  16447e1... a11y: Add AT-SPI cache object (*)
  c346e13... a11y: Return the ATSPI role for the root element (*)
  23c2cf3... tests: Use the test ATContext for every test (*)
  e494c1a... a11y: Compute the label for a GtkATContext (*)
  bb77003... a11y: Convert GTK roles to ATSPI ones (*)
  ac7eb2b... a11y: Turn accessible roles to string (*)
  6f2c0ba... a11y: Validate the DBus context path (*)
  143926c... a11y: Add method to extract desktop data (*)
  a488325... a11y: Implement more ATSPI methods on the root node (*)
  153e337... a11y: Register the Accessible interface on all AtSpiContext (*)
  ad79feb... atspicontext: Print out the a11y bus address
  06ee424... atspiroot: Implement GetLocale
  b1b1fe8... atspiroot: Don't leak references
  787d900... atspiroot: Implement GetChildren

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