tzcode2000h.tar.gz and tzdata2000h.tar.gz

The files ftp://elsie.nci.nih.gov/pub/tzcode2000h.tar.gz and ftp://elsie.nci.nih.gov/pub/tzdata2000h.tar.gz are now available. These include the changes circulated by Paul Eggert to the time zone mailing last week, along with one typo fix in the "art" file. With providence, this is the last update of the millenium. --ado