Update ICU to 54.1 step 1

source/tools/tzcode/tzfile.h

Index: source/tools/tzcode/tzfile.h
diff --git a/source/tools/tzcode/tzfile.h b/source/tools/tzcode/tzfile.h
index 3a9eee305a53cc7bea4c9abb390a631b6fd16e76..911130eb939a1abe95470616dad6675ecbaf40f0 100644
--- a/source/tools/tzcode/tzfile.h
+++ b/source/tools/tzcode/tzfile.h
@@ -16,16 +16,6 @@
 */
 
 /*
-** ID
-*/
-
-#ifndef lint
-#ifndef NOID
-static char	tzfilehid[] = "@(#)tzfile.h	8.1";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
 ** Information about time zone files.
 */
 
@@ -49,7 +39,7 @@ static char	tzfilehid[] = "@(#)tzfile.h	8.1";
 
 struct tzhead {
 	char	tzh_magic[4];		/* TZ_MAGIC */
-	char	tzh_version[1];		/* '\0' or '2' as of 2005 */
+	char	tzh_version[1];		/* '\0' or '2' or '3' as of 2013 */
 	char	tzh_reserved[15];	/* reserved--must be zero */
 	char	tzh_ttisgmtcnt[4];	/* coded number of trans. time flags */
 	char	tzh_ttisstdcnt[4];	/* coded number of trans. time flags */
@@ -65,7 +55,7 @@ struct tzhead {
 **	tzh_timecnt (char [4])s		coded transition times a la time(2)
 **	tzh_timecnt (unsigned char)s	types of local time starting at above
 **	tzh_typecnt repetitions of
-**		one (char [4])		coded UTC offset in seconds
+**		one (char [4])		coded UT offset in seconds
 **		one (unsigned char)	used to set tm_isdst
 **		one (unsigned char)	that's an abbreviation list index
 **	tzh_charcnt (char)s		'\0'-terminated zone abbreviations
@@ -78,7 +68,7 @@ struct tzhead {
 **					if absent, transition times are
 **					assumed to be wall clock time
 **	tzh_ttisgmtcnt (char)s		indexed by type; if TRUE, transition
-**					time is UTC, if FALSE,
+**					time is UT, if FALSE,
 **					transition time is local time
 **					if absent, transition times are
 **					assumed to be local time
@@ -92,6 +82,13 @@ struct tzhead {
 ** instants after the last transition time stored in the file
 ** (with nothing between the newlines if there is no POSIX representation for
 ** such instants).
+**
+** If tz_version is '3' or greater, the above is extended as follows.
+** First, the POSIX TZ string's hour offset may range from -167
+** through 167 as compared to the POSIX-required 0 through 24.
+** Second, its DST start time may be January 1 at 00:00 and its stop
+** time December 31 at 24:00 plus the difference between DST and
+** standard time, indicating DST all year.
 */
 
 /*
@@ -100,20 +97,12 @@ struct tzhead {
 */
 
 #ifndef TZ_MAX_TIMES
-#define TZ_MAX_TIMES	1200
+#define TZ_MAX_TIMES	2000
 #endif /* !defined TZ_MAX_TIMES */
 
 #ifndef TZ_MAX_TYPES
-#ifndef NOSOLAR
+/* This must be at least 17 for Europe/Samara and Europe/Vilnius.  */
 #define TZ_MAX_TYPES	256 /* Limited by what (unsigned char)'s can hold */
-#endif /* !defined NOSOLAR */
-#ifdef NOSOLAR
-/*
-** Must be at least 14 for Europe/Riga as of Jan 12 1995,
-** as noted by Earl Chew.
-*/
-#define TZ_MAX_TYPES	20	/* Maximum number of local time types */
-#endif /* !defined NOSOLAR */
 #endif /* !defined TZ_MAX_TYPES */
 
 #ifndef TZ_MAX_CHARS
@@ -132,7 +121,7 @@ struct tzhead {
 #define DAYSPERNYEAR	365
 #define DAYSPERLYEAR	366
 #define SECSPERHOUR	(SECSPERMIN * MINSPERHOUR)
-#define SECSPERDAY	((long) SECSPERHOUR * HOURSPERDAY)
+#define SECSPERDAY	((int_fast32_t) SECSPERHOUR * HOURSPERDAY)
 #define MONSPERYEAR	12
 
 #define TM_SUNDAY	0