libgnomeprint 2.8.1

Andreas
	* Fix some preview problem, see #157881

Jody
	* Don't force duplex/tumble
	http://bugzilla.gnome.org/show_bug.cgi?id=157706
	* Preview makes a better guess of the screen resolution

Suresh Chandrasekharan
	http://bugzilla.gnome.org/show_bug.cgi?id=156641
	* BE more robust when dealing with fonts with multiple encodings

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