to address issues with NetBSD-6(and earlier)'s fontconfig not being
new enough for pango.
While doing that, also bump freetype2 dependency to current pkgsrc
version.
Suggested by tron in PR 47882
unicode-screensaver is a simple screensaver application that
repeatedly randomly picks an unicode character and displays it in
a very large font size together with its unicode code point and
the character name.