Sync zoneinfo database with tzdata2011b from elsie.nci.nih.gov

Sync zoneinfo database with tzdata2011b from elsie.nci.nih.gov

northamerica:   8.39 -> 8.40
zone.tab:       8.38 -> 8.40

* northamerica: Add America/North_Dakota/Beulah (Mercer County,
    North Dakota, moved from Mountain to Central time at the
    end of DST in 2010). Also, use the actual version number
    rather than "%W%".

* zone.tab: Add America/North_Dakota/Beulah. Also, update
    Indonesian location names (with the old names retained in
    parentheses).