compile errors on timezone database

[Paul Eggert]

Here's a better fix, which I'll propose as part of my next major
patch.  It keeps the transition times asis, without any tricks and
without using 24:00, by using May 1 and Oct 1 when lastSat 24:00 does
not equal lastSun 00:00.  (As it happens, I got the transition times
wrong in Toronto anyway: Shanks says they were at 02:00, not at 00:00.
I must have copied the Montreal entries.  Oops.  The following
part-of-a-patch fixes that too.)

@@ -951,10 +961,13 @@ Rule	Mont	1922	only	-	Apr	30	2:00	1:00	D
 Rule	Mont	1924	only	-	May	17	2:00	1:00	D
 Rule	Mont	1924	1926	-	Sep	lastSun	2:30	0	S
 Rule	Mont	1925	1926	-	May	Sun>=1	2:00	1:00	D
-Rule	Mont	1927	1937	-	Apr	lastSat	24:00	1:00	D
-Rule	Mont	1927	1937	-	Sep	lastSat	24:00	0	S
-Rule	Mont	1938	1940	-	Apr	lastSun	0:00	1:00	D
-Rule	Mont	1938	1939	-	Sep	lastSun	0:00	0	S
+Rule	Mont	1927	only	-	May	 1	0:00	1:00	D
+Rule	Mont	1927	1932	-	Sep	lastSun	0:00	0	S
+Rule	Mont	1928	1931	-	Apr	lastSun	0:00	1:00	D
+Rule	Mont	1932	only	-	May	 1	0:00	1:00	D
+Rule	Mont	1933	1940	-	Apr	lastSun	0:00	1:00	D
+Rule	Mont	1933	only	-	Oct	 1	0:00	0	S
+Rule	Mont	1934	1939	-	Sep	lastSun	0:00	0	S
 Rule	Mont	1946	1973	-	Apr	lastSun	2:00	1:00	D
 Rule	Mont	1945	1948	-	Sep	lastSun	2:00	0	S
 Rule	Mont	1949	1950	-	Oct	lastSun	2:00	0	S
@@ -973,12 +986,14 @@ Rule	Toronto	1922	1926	-	Sep	Sun>=15	2:0
 Rule	Toronto	1924	1927	-	May	Sun>=1	2:00	1:00	D
 Rule	Toronto	1927	1928	-	Sep	lastSun	2:00	0	S
 Rule	Toronto	1928	only	-	Apr	lastSun	2:00	1:00	D
-Rule	Toronto	1929	only	-	Apr	lastSun	0:00	1:00	D
-Rule	Toronto	1929	only	-	Sep	lastSun	0:00	0	S
-Rule	Toronto	1930	1937	-	Apr	lastSat	24:00	1:00	D
-Rule	Toronto	1930	1937	-	Sep	lastSat	24:00	0	S
-Rule	Toronto	1938	1940	-	Apr	lastSun	0:00	1:00	D
-Rule	Toronto	1938	1939	-	Sep	lastSun	0:00	0	S
+Rule	Toronto	1929	only	-	Apr	lastSun	2:00	1:00	D
+Rule	Toronto	1929	only	-	Sep	lastSun	2:00	0	S
+Rule	Toronto	1930	1931	-	Apr	lastSun	2:00	1:00	D
+Rule	Toronto	1930	1932	-	Sep	lastSun	2:00	0	S
+Rule	Toronto	1932	only	-	May	 1	2:00	1:00	D
+Rule	Toronto	1933	1940	-	Apr	lastSun	2:00	1:00	D
+Rule	Toronto	1933	only	-	Oct	 1	2:00	0	S
+Rule	Toronto	1934	1939	-	Sep	lastSun	2:00	0	S
 Rule	Toronto	1945	1946	-	Sep	lastSun	2:00	0	S
 Rule	Toronto	1946	only	-	Apr	lastSun	2:00	1:00	D
 Rule	Toronto	1947	1949	-	Apr	lastSun	0:00	1:00	D