[tz] draft of change summary for next tz release

[Paul Eggert]

Russ Allbery wrote:

> Thank you *very much* for doing this research.

Likewise!  I very much appreciate good research like that.
I know how much time and energy it can take; thanks.

I plan to add the following to the release announcement:

    (Thanks to Alois Treindl for confirming that the old
    Europe/Vaduz zone was wrong and the new link is better
    for WWII-era times.)

and have pushed the following patch, which affects only commentary.

>From b8e081b8bae00f6939103b15657591af5856ddce Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert at cs.ucla.edu>
Date: Wed, 18 Sep 2013 10:39:29 -0700
Subject: [PATCH] * europe (Europe/Vaduz): Add confirming commentary from
Alois
 Treindl.

---
 europe | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/europe b/europe
index 9cfe80f..a7b1676 100644
--- a/europe
+++ b/europe
@@ -1564,12 +1564,23 @@ Zone    Europe/Riga    1:36:24    -    LMT    1880
             2:00    EU    EE%sT

 # Liechtenstein
+
 # From Paul Eggert (2013-09-09):
 # Shanks & Pottenger say Vaduz is like Zurich.
-# Given the close ties between Liechtenstein and Switzerland during WWII,
-# assume our circa-1941 corrections to Zurich apply also to Vaduz.
+
+# From Alois Treindl (2013-09-18):
+# http://www.eliechtensteinensia.li/LIJ/1978/1938-1978/1941.pdf
+# ... confirms on p. 6 that Liechtenstein followed Switzerland in 1941
and 1942.
+# I ... translate only the last two paragraphs:
+#    ... during second world war, in the years 1941 and 1942, Liechtenstein
+#    introduced daylight saving time, adapting to Switzerland.  From
1943 on
+#    central European time was in force throughout the year.
+#    From a report of the duke's government to the high council,
+#    regarding the introduction of a time law, of 31 May 1977.
+
 Link Europe/Zurich Europe/Vaduz

+
 # Lithuania

 # From Paul Eggert (1996-11-22):
--
1.8.3.1