lib/time: update tzdata to 2016i

Fixes #17678

Change-Id: I01d12a827e6106efed1ec024f736c640b86906b4
Reviewed-on: https://go-review.googlesource.com/33029
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

lib/time/update.bash

@@ -8,8 +8,8 @@
 # Consult http://www.iana.org/time-zones for the latest versions.
 
 # Versions to use.
-CODE=2016g
-DATA=2016g
+CODE=2016i
+DATA=2016i
 
 set -e
 rm -rf work