[tz] Moldova in zone.tab

Now that Moldova has split into two timezones, the zones need descriptions in zone.tab. However, tzdata2011m only gives a description for the new Europe/Tiraspol, leaving the old Europe/Chisinau with no description. This violates the format of zone.tab. (Which makes my automatic repackaging for CPAN protest.) Following examples such as Chile and Greenland, I believe the appropriate description for Europe/Chisinau is "most locations". -zefram