Disable test for multiple-font-families; restore old reference files
I don't know what's making 577-multiple-font-families.svg pass on my machine but fail in CI and in RPM builds. So we'll go back to the old test files for a while. Findings so far: - This doesn't depend on order in which font files are added to FcConfig - changed test-utils.c to use a different order and nothing changed. - During pango_itemize for a layout, I think pango is using the first font in the fontset that contains the codepoint for a particular character, even if there are other fonts in the fontset. Maybe ordering is not constant? But given a PangoFontDescription like "Nonexistent, serif, sans-serif", why is it not using serif first? Sigh.