Fix issue# 13313: Line Islands Standard Time was missing.

It's included in this update http://support.microsoft.com/kb/2981580 but
has yet to make it into
http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/zone_tzid.html

std/datetime.d

@@ -29438,6 +29438,7 @@ string windowsTZNameToWindowsTZName(string tzName) @safe pure nothrow @nogc
         case "Kaliningrad Standard Time": return "Europe/Kaliningrad";
         case "Korea Standard Time": return "Asia/Seoul";
         case "Libya Standard Time": return "Africa/Tripoli";
+        case "Line Islands Standard Time": return "Africa/Bogota";
         case "Magadan Standard Time": return "Asia/Magadan";
         case "Mauritius Standard Time": return "Indian/Mauritius";
         case "Middle East Standard Time": return "Asia/Beirut";