linux: Add patterns for subpixel test to fonts.conf.
linux: Add patterns for subpixel test to fonts.conf.

This updates our layout test fontconfig settings to define
one font family that explicitly enables subpixel rendering
and one that disables it.  I'm using this in a test for a
change that fixes
https://bugs.webkit.org/show_bug.cgi?id=42220.

BUG=chromium-os:4638
TEST=upcoming

Review URL: http://codereview.chromium.org/2928011

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@52562 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser