* NEWS, africa, australasia: Minor commentary fixes.

Some of these are from Tim Parenti's proposed patches in:
http://mm.icann.org/pipermail/tz/2014-July/021265.html
Revert almost all the zone-to-link changes, keeping only west Africa.

This should better address concerns about large-scale changes.
We can do the rest of these changes later, as they're not urgent.
* backward (Africa/Asmera, Asia/Saigon): Restore old links.
* checktab.awk (tztab): Handle zones that should probably be
turned into links some day.
* africa (Africa/Luanda, Africa/Porto-Novo, Africa/Gaborone)
(Africa/Bujumbura, Africa/Douala, Africa/Bangui, Indian/Comoro)
(Africa/Kinshasa, Africa/Lubumbashi, Africa/Brazzaville)
(Africa/Djibouti, Africa/Malabo, Africa/Asmara, Africa/Addis_Ababa)
(Africa/Libreville, Africa/Maseru, Indian/Antananarivo)
(Africa/Blantyre, Indian/Mayotte, Africa/Niamey, Africa/Kigali)
(Africa/Mogadishu, Africa/Mbabane, Africa/Dar_es_Salaam)
(Africa/Kampala, Africa/Lusaka, Africa/Harare):
* asia (Asia/Bahrain, Asia/Phnom_Penh, Asia/Kuwait)
(Asia/Vientiane, Asia/Muscat, Asia/Ho_Chi_Minh, Asia/Aden):
* australasia (Pacific/Saipan, Pacific/Midway):
* northamerica, southamerica (America/Antigua, America/Cayman):
New zones, restoring 2014e data.  Corresponding links removed.
* NEWS: Document the above.