[tz] Grouped country lists are confusing

Recent changes merged the comments acting as country headers. Thus, a typical merged header is now: # Denmark # Germany # Norway # Sweden It is very confusing to suggest that all four countries are evenly represented here, as the commentary is typically all about the primary country (Germany in this case). The alphabetical list is decidedly unhelpful too, as nothing indicates which country the Zone's city relates to. Can I propose these comments be altered to something like: # Germany # also applicable since 1970 to Denmark # also applicable since 1970 to Norway # also applicable since 1970 to Sweden thanks Stephen