* src/widgets/modest-msg-view.[ch]:

* src/widgets/modest-msg-view.[ch]:
	* Completely reworked the scroll support. Now it's
	  implemented using proper GdkWindow operations
	* Now it inherits directly from GtkContainer, and
	  implements set_scroll_adjustments. This way, it
	  can be added to a GtkScrolledWindow controlling
	  its scroll bars.
	* Implementation of internal gtk widget methods
	  for managing the drawing (realize, expose, etc).
	* Implementation of internal gtk container methods
	  for managing children removal.
	* It embeds the contents gtkhtml in a scrolled window,
	  but it always tries to make the scroll be completely
          shown in the backing store gdkwindow that provides
          scrolls to upper windows.
* src/maemo/modest-msg-view-window.c
	* Embed the new msg view with a scrollbar now
          it's supported.
* src/gnome/modest-msg-view-window.c
	* Embed the new msg view with a scrollbar now
          it's supported. Now it does not need a
	  viewport.
* src/gnome/modest-main-window.c
	* Embed the new msg view with a scrollbar now
          it's supported. Now it does not need a
	  viewport.

pmo-trunk-r900