[cairo] cairo pango font hinting

[Gerdus van Zyl]

How does setting font options in cairo effect pango rendering? The
below snippet does not influence rendering as expected.
This is in python and using the binaries from Tor Lillqvist's web page
(http://www.gimp.org/~tml/gimp/win32/downloads.html) - pango-1.18.3

fo = cairo.FontOptions()
fo.set_hint_metrics(cairo.HINT_METRICS_ON)
fo.set_hint_style(cairo.HINT_STYLE_FULL)
fo.set_antialias(cairo.ANTIALIAS_NONE)
ctx.set_font_options(fo)

cr = pangocairo.CairoContext(ctx)

The problem I have is that with font "Arial" and sizes below 11 the
number 1 is very hard to see.  See the attached screenshot. It is the
only character I know of that has the problem.
Switching to another font (eg.Tahoma) is possible but if there is an
easy fix for the problem that would be good since Arial is very
prevalent on Windows

Thanks,
Gerdus van Zyl
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