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This uses the new api introduced in the previous commits.

This just records the hotspot coordinates. Still to do:
apply the hotspot when updating the drag window.

This makes the drag behavior under X11 match what we had previously.

With GdkDragContext now being in charge of placing the window,
it needs to know about the hotspot to place under the cursor.

We only have one screen nowadays, so the fallback_icon is
never used.

Otherwise rounding errors fool the "tab under coordinates" checks on
crossing events, which will be triggered close enough to the window
rectangle if the pointer moves slowly enough.

With this, the tab_prelight() function correctly figures out we've
moved the pointer outside the tab area when called in
gtk_notebook_leave_notify().

https://bugzilla.gnome.org/show_bug.cgi?id=759091

After removal of the selectable header and separator from the combo box,
the method to update the menu sensitivity must be changed as it assumes
at least two items within each sub menu and contains special handling
for the separator. Removing this fixes bug #759079.

Since we're no longer doing geometry widgets, don't send
base size and increments to the window manager anymore either.
This avoids an ugly 2 pixel gap to the right and bottom of half-tiled
terminals under gnome-shell.

We were getting the "New Accelerator" text mixed with the
content of the underlying cell, since plain labels don't
have a background. Go back to putting the label in selected
state, and fix the theme to render that white-on-blue. This
was lost when we switched to using a selection sub-node.

The function can return NULL.

https://bugzilla.gnome.org/show_bug.cgi?id=759081

Showing two lists in a paned was a bit awkward, and space was
getting too limited. Go back to showing just the node list at
first, and make the CSS properties available via a stack. At
the same time, add a right-click context menu to the node list
to make the name and class editing more easily available.

gkt_cell_layout_get_area may return NULL, handle it.

Use the standard name for the busy+interactive cursor.

The names are the preferred API for cursors, so use it.

We use these cursors in GTK+, so check for their existence.

No need to crash here. Missing cursors are ugly, but we
shouldn't crash.

Show how to draw checks and radios.

Pop up the completion window after 100ms. The previous timeout
of 300ms was making completions feel slow.

https://bugzilla.gnome.org/show_bug.cgi?id=758929

This was missing so far.

gtk_window_set_titlebar does not take ownership of the headerbar,
so we need to explicitly destroy it.

The gesture functionality was taken over by GtkShortcutsShortcut,
so this widget is no longer needed, and it never was in a stable
release, so lets get rid of it.

...removing the progressbar_fill mixin in the process.

GtkFontChooserWidget is using a GThemedIcon in its template,
so we need to ensure that the type is registered before
loading it. This was causing the defaultvalue test to fail.

https://bugzilla.gnome.org/show_bug.cgi?id=759048

The text-inserted/text-deleted handlers rely on the cursor positions
being unadjusted after the text change, so we can't do it in
buffer_notify_text.

GtkStatusIcon tests don't work well under xwayland either, so just
skip them unconditionally.
GtkEntry now fails because the update of the im-module is no longer
deferred to an idle, and (gtk-im-simple) is not a valid module
name, so skip this property.

The subscript was affecting the vertical alignment too much,
so tweak the rendering of the L/R markers to avoid that. Also,
mark these as translatable.

This will be useful for tweaking the gesture image details,
among other things.