I have found that freetype changed the appearance of fonts recently, and
bisected the behavioral change down to between 119e8e41e and ed1d8983f.
The attached screenshot shows xterm -fa "Ubuntu Mono:size=22:dpi=96",
which now takes up more overall horizontal space as a result of the
change, meaning I actually have to reduce the font size somewhat to get
a window of the same size as before.
I would like to get back the previous behavior (with a current
freetype), where chars are rendered slightly wider and actually have a
better hinting (cf. the stem of a 'b').
 if not delivered, see http://inai.de/files/ft-bytecode38.png
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