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

Gbp-Pq: Name 018_gdkenumtypes.c_location.patch

_no_offscreen_device_grabbing

Gbp-Pq: Name 017_no_offscreen_device_grabbing.patch

_no_offscreen_widgets_grabbing

Gbp-Pq: Name 016_no_offscreen_widgets_grabbing.patch

gtk+3.0 (3.22.24-1) unstable; urgency=low

  * New upstream release (LP: #1712011, #1719047)
  * Cherry-pick fixes committed after the 3.22.24 release:
    - 0001-Adwaita-Fix-typo-.backgrounf-.background.patch
    - 0002-theme-Fix-Adwaita-headerbars.patch
    - 0003-display-x11-Unset-tiled-state-if-_GTK_EDGE_CONSTRAIN.patch

[dgit import unpatched gtk+3.0 3.22.24-1]

Import gtk+3.0_3.22.24.orig.tar.xz

[dgit import orig gtk+3.0_3.22.24.orig.tar.xz]

Import gtk+3.0_3.22.24-1.debian.tar.xz

[dgit import tarball gtk+3.0 3.22.24-1 gtk+3.0_3.22.24-1.debian.tar.xz]