Patch review: sizing toggle cell renderers based on font size

[Ross Burton <ross burtonini com>]

Hi,

http://bugzilla.gnome.org/show_bug.cgi?id=459997 contains a patch we're
shipping in Poky (pokylinux.org) to size the toggle cell renderer check
boxes to roughly the height of the font instead of hard-coding it at
12px.  A 12px check box is a little tricky to use on a screen with 200+
dpi. :)

I'd appreciate a review of this, we've got far too many patches at the
moment.

Ross
-- 
Ross Burton                                 mail: ross burtonini com
                                          jabber: ross burtonini com
                                     www: http://www.burtonini.com./
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