Add colord ICC store dirs to CMS search paths

Merged username-removed-1641394 requested to merge fbbdev/inkscape:colord_icc_store into master

On GNOME and KDE platforms, colord stores known ICC profiles in some user-local and system-wide directories. This patch adds such dirs to CMS search paths.

For reference, see https://github.com/hughsie/colord/blob/fe10f76536bb27614ced04e0ff944dc6fb4625c0/lib/colord/cd-icc-store.c#L590