Add an empty line after @newin where it's missing

* gdk/src/device.hg:
* gdk/src/display.hg:
* gdk/src/rectangle.hg:
* gdk/src/screen.hg:
* gdk/src/window.hg:
* gtk/src/application.hg:
* gtk/src/builder.hg:
* gtk/src/entrybuffer.hg:
* gtk/src/iconview.hg:
* gtk/src/listbox.hg:
* gtk/src/listboxrow.hg:
* gtk/src/pagesetup.hg:
* gtk/src/papersize.hg:
* gtk/src/printsettings.hg:
* gtk/src/radiotoolbutton.hg:
* gtk/src/toolitem.hg:
* gtk/src/uimanager.hg:
* gtk/src/widget.hg: Add an empty line after @newin where it's needed in
order to avoid bad side effects in the documentation. Doxygen assumes that
@newin is followed by a paragraph that describes what is new.
Gtk::Dialog: Fix the constructors with DialogFlags

* gtk/src/dialog:ccg: Don't call gtk_dialog_new_with_buttons(). The Gtk::Dialog
will get the wrong GType. Use _CONSTRUCT() + extra code instead. Bug #738513.
Regenerate .defs.
Regenerate .docs.xml.
Widget: Added get_action_group() and list_action_prefixes().
Stack: Wrap hhomogeneous and vhomogeneous properties
TextView: Wrap monospace property
TextTag: Wrap missing properties

	* Wrap fallback and fallback-set properties.
	* Wrap letter-spacing and letter-spacing-set properties.
ScrolledWindow: Wrap missing symbols

	* Wrap overlay-scrolling property and corresponding
	getter/setter methods.
	* Wrap ::edge-overshot signal.
3.15.3
TextBuffer: Wrap gtk_text_buffer_insert_markup()
Merge branch 'master' of git://git.gnome.org/gtkmm