* backzone (Asia/Hanoi): Just say "1954 Oct" for 1954 transition.

See Tim Parenti's comment in:
http://mm.icann.org/pipermail/tz/2014-October/021717.html
new Zone Pacific/Bougainville

This is for the part of Papua New Guinea that plans to switch from
UTC+10 to UTC+11 on 2014-12-28 at 02:00.  (Thanks to Kiley Walbom
for the heads-up.)
* australasia (Pacific/Bougainville): New zone.
* zone.tab, zone1970.tab: Add entries for it.
* NEWS: Document this.
* australasia (Pacific/Fiji), NEWS: Guess no DST this year.
* newtzset.3: Mention that the Fiji example is obsolete.

(Thanks to Ken Rylander for the heads-up.)
* NEWS: Adds missing subheading.
* zdump.8: Be more specific about when a year starts.