[tz] Minor fixes to commentary

[Tim Parenti]

The attached patch fixes a few minor issues left in commentary, and also 
adds a note about the constructed lines for America/Montevideo which 
currently work around the non-prevalence of zic which supports %z.

-- 
Tim Parenti

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From bf47806700122071698c1375453a171fdc66d123 Mon Sep 17 00:00:00 2001
From: Tim Parenti <tim at timtimeonline.com>
Date: Mon, 19 Dec 2016 16:01:17 -0500
Subject: Minor fixes to commentary.

* NEWS: Fix typo.
* northamerica (America/Miquelon): Remove unnecessary comment.
* southamerica (Atlantic/Stanley): Remove unnecessary comment.
(America/Montevideo): Mention that the last several lines are merely
constructed to emulate zic %z.
---
 NEWS         | 2 +-
 northamerica | 2 +-
 southamerica | 8 +++++++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/NEWS b/NEWS
index 780c81c..42421e7 100644
--- a/NEWS
+++ b/NEWS
@@ -63,7 +63,7 @@ Unreleased, experimental changes
   Changes to code
 
     zdump -i now outputs non-hour numeric time zone abbreviations
-    without a colon, e.g., "+0535" rather than "+05:30".  This agrees
+    without a colon, e.g., "+0530" rather than "+05:30".  This agrees
     with zic %z and with common practice, and simplifies auditing of
     zdump output.
 
diff --git a/northamerica b/northamerica
index bb0af6c..b6eb29b 100644
--- a/northamerica
+++ b/northamerica
@@ -3310,7 +3310,7 @@ Zone America/Puerto_Rico -4:24:25 -	LMT	1899 Mar 28 12:00 # San Juan
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Miquelon	-3:44:40 -	LMT	1911 May 15 # St Pierre
 			-4:00	-	AST	1980 May
-			-3:00	-	-03	1987 # Pierre & Miquelon Time
+			-3:00	-	-03	1987
 			-3:00	Canada	-03/-02
 
 # St Vincent and the Grenadines
diff --git a/southamerica b/southamerica
index 78f93ae..fe88965 100644
--- a/southamerica
+++ b/southamerica
@@ -1479,7 +1479,7 @@ Rule	Falk	2001	2010	-	Sep	Sun>=1	2:00	1:00	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Atlantic/Stanley	-3:51:24 -	LMT	1890
 			-3:51:24 -	SMT	1912 Mar 12 # Stanley Mean Time
-			-4:00	Falk	-04/-03	1983 May    # Falkland Is Time
+			-4:00	Falk	-04/-03	1983 May
 			-3:00	Falk	-03/-02	1985 Sep 15
 			-4:00	Falk	-04/-03	2010 Sep  5  2:00
 			-3:00	-	-03
@@ -1745,6 +1745,12 @@ Zone America/Montevideo	-3:44:44 -	LMT	1898 Jun 28
 			-3:00	Uruguay	-03/-02	1974
 			-3:00	Uruguay	-03/-0230 1974 Dec 22
 			-3:00	Uruguay	-03/-02
+# From Tim Parenti (2016-12-19):
+# The transitions after 1942 are constructed to support representing Uruguay's
+# various DST schemes while zic %z is relatively new and not widely supported.
+# The last several lines can ultimately be replaced with the following:
+#			-3:30	Uruguay	%z	1942 Dec 14
+#			-3:00	Uruguay	%z
 
 # Venezuela
 #
-- 
2.8.0