Add timezone file for Uruguay tz changes since 1977.

Reference: /n/sources/patch/applied/timezone-uruguay
Date: Tue Dec 11 03:23:18 CET 2012
Signed-off-by: fcr@adinet.com.uy

--- /adm/timezone/Uruguay	Thu Jan  1 00:00:00 1970
+++ /adm/timezone/Uruguay	Tue Dec 11 03:21:44 2012
@@ -0,0 +1,15 @@
+UYT -10800 UYST -7200
+ 250052400  260244000  307594800  325994400  566449200  574308000 
+ 597812400  605671200  625633200  636516000  656478000  667965600 
+ 688532400  699415200  719377200  730864800 1095562800 1111896000
+1128834000 1142136000 1159678800 1173585600 1191733200 1205035200
+1223182800 1236484800 1254632400 1268539200 1286082000 1299988800
+1317531600 1331438400 1349586000 1362888000 1381035600 1394337600
+1412485200 1425787200 1443934800 1457841600 1475384400 1489291200
+1506834000 1520740800 1538888400 1552190400 1570338000 1583640000
+1601787600 1615694400 1633237200 1647144000 1664686800 1678593600
+1696136400 1710043200 1728190800 1741492800 1759640400 1772942400
+1791090000 1804996800 1822539600 1836446400 1853989200 1867896000
+1886043600 1899345600 1917493200 1930795200 1948942800 1962849600
+1980392400 1994299200 2011842000 2025748800 2043291600 2057198400
+2075346000 2088648000 2106795600 2120097600