Upgrade to tzdata2011c.

Affects Chile and Annette Island, Alaska.

Change-Id: Ie4985a69e803bbc7ccd30619799ee5a9fd3737ce
diff --git a/libc/zoneinfo/zoneinfo.version b/libc/zoneinfo/zoneinfo.version
index 1bec5a4..c01af38 100644
--- a/libc/zoneinfo/zoneinfo.version
+++ b/libc/zoneinfo/zoneinfo.version
@@ -1 +1 @@
-2011b
+2011c