lib/time: update to IANA release 2015e.

Fixes #11810.

Change-Id: I8453e53a72e242a69ea34eb393999e7291d4358f
Reviewed-on: https://go-review.googlesource.com/12502
Run-TryBot: David Symonds <dsymonds@golang.org>
Reviewed-by: Rob Pike <r@golang.org>

lib/time/update.bash

@@ -7,8 +7,8 @@
 # downloaded from the ICANN/IANA distribution.
 
 # Versions to use.
-CODE=2014j
-DATA=2014j
+CODE=2015e
+DATA=2015e
 
 set -e
 rm -rf work