[gtk] (32 commits) Non-fast-forward update to branch ebassi/new-a11y

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'ebassi/new-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:

  804f803... Remove ATK
  bebed37... a11y: Add the supported accessibility roles
  c016adc... Introduce GtkAccessible
  3b8f99f... Add GtkAccessibleValue
  e7162de... Add GtkAccessibleStateSet
  309e0f8... Add GtkATContext
  451acd8... Plug GtkATContext into GtkAccessible
  64097ce... Have GtkWidget implement GtkAccessible
  6bfacc7... Update the accessible state on widget visibility changes
  7b50d97... Start documenting the Accessibility API
  486e436... Allow setting the accessible role at construction
  31cc344... Plumb all the GtkAccessibleProperty values into GtkAccessib
  5e2718a... Add GtkAccessiblePropertySet
  024123c... Add accessible properties to GtkAccessible
  fe589dd... a11y: Add roles to various widgets
  53812d0... a11y: Update the "pressed" state on toggle buttons
  882e5e1... a11y: Update the accessible state for GtkRange
  ba09a6e... a11y: Set the role for GtkScale
  bcdf9b3... a11y: Update GtkSeparator
  f949731... a11y: Update the accessible label for GtkButton
  228299f... a11y: Collect reference value
  5d96613... a11y: Add binding-friendly accessible property setter
  fd200c8... Remove GTK_ACCESSIBLE_STATE_NONE
  4bca803... a11y: Resync with the ARIA spec
  68ca009... a11y: Simplify GtkAccessibleValue
  d0723f0... a11y: Add relations API
  334aa6a... a11y: Consolidate the attributes container

Commits added to the branch:

  d5fbb17... Remove ATK
  3f9d901... a11y: Add the supported accessibility roles
  58e5673... Introduce GtkAccessible
  30b1145... Add GtkAccessibleValue
  2ed8b18... Add GtkAccessibleStateSet
  a2497b4... Add GtkATContext
  e05a91c... Plug GtkATContext into GtkAccessible
  3a9e33b... Have GtkWidget implement GtkAccessible
  71525a0... Update the accessible state on widget visibility changes
  9de083d... Start documenting the Accessibility API
  79ab1a1... Allow setting the accessible role at construction
  ffa0bfa... Plumb all the GtkAccessibleProperty values into GtkAccessib
  c092a86... Add GtkAccessiblePropertySet
  2d47539... Add accessible properties to GtkAccessible
  44e4f41... a11y: Add roles to various widgets
  05ca73d... a11y: Update the "pressed" state on toggle buttons
  2bdafcc... a11y: Update the accessible state for GtkRange
  e1456b4... a11y: Set the role for GtkScale
  02e7d33... a11y: Update GtkSeparator
  32ca289... a11y: Update the accessible label for GtkButton
  f55d056... a11y: Collect reference value
  dd1a44a... a11y: Add binding-friendly accessible property setter
  0e363de... Remove GTK_ACCESSIBLE_STATE_NONE
  f258f5c... a11y: Resync with the ARIA spec
  d70361d... a11y: Simplify GtkAccessibleValue
  8f6d080... a11y: Add relations API
  e5196e3... a11y: Consolidate the attributes container
  e617fe9... a11y: Implement role and state change in GtkSwitch
  1530ec2... a11y: Add testing API
  2114fdd... Add GTK_DEBUG=accessibility
  0b3240c... testatcontext: Use the new debug flag
  e19adc4... inspector: Support the a11y debug flag