Consistently treat gdkenumtypes.[hc] as source files

Always generate gdk/gdkenumtypes.c in the source tree, and fix path in the
introspection sources. With this, gdkenumtypes.c is correctly included with
separate build trees, too. This fixes missing GTypes in the .gir when using a
separate build tree.

Also remove the gdk/stamp-gdkenumtypes.h target. It was forcing the
regeneration of gdk/gdkenumtypes.h even if it was already present and current
in the source tree.

Bug: https://bugzilla.gnome.org/show_bug.cgi?id=647729
Bug-Ubuntu: https://launchpad.net/bugs/769256
Forwarded: yes

Gbp-Pq: Name 018_gdkenumtypes.c_location.patch

Do not allow devices in an offscreen hierarchy to take grabs.

Bug: https://bugzilla.gnome.org/show_bug.cgi?id=658563
Bug-Ubuntu: https://launchpad.net/bugs/804009
Forwarded: yes

Gbp-Pq: Name 017_no_offscreen_device_grabbing.patch

Don't let offscreen widget do grabbing

Bug: https://bugzilla.gnome.org/show_bug.cgi?id=607668
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=658563
Bug-Ubuntu: https://bugs.launchpad.net/bugs/512427
Forwarded: yes

Gbp-Pq: Name 016_no_offscreen_widgets_grabbing.patch

gtk+3.0 (3.22.29-2) unstable; urgency=medium

  * Team upload
  * Refresh patch series through gbp-pq
    - Harvest date and authorship information from debian/changelog
  * Add more upstream status information to the patch series
  * d/p/0009-gtkimmodule-make-match_backend-query-the-wayland-reg.patch,
    d/p/0010-imwayland-Avoid-TOGGLE_INPUT_PANEL-requests-if-there.patch:
    Add patches from upstream fixing Wayland client crashes under
    unspecified circumstances (Closes: #893696)
  * d/p/0011-gtkstylecontext-guard-against-gtk_css_widget_node_ge.patch:
    Add patch from upstream fixing a NULL dereference
  * d/p/0012-widget-Only-print-allocation-warnings-with-enable-de.patch:
    Add patch from upstream silencing allocation warnings for stable
    branches (if there is ever a GTK+ 3.23 then these warnings would
    come back until 3.24). (Closes: #867427)

[dgit import unpatched gtk+3.0 3.22.29-2]

Import gtk+3.0_3.22.29-2.debian.tar.xz

[dgit import tarball gtk+3.0 3.22.29-2 gtk+3.0_3.22.29-2.debian.tar.xz]

Import gtk+3.0_3.22.29.orig.tar.xz

[dgit import orig gtk+3.0_3.22.29.orig.tar.xz]