time: switch to using (uncompressed) zoneinfo zip file
Removal of old zoneinfo files is a separate CL due to its size.
R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/5676100
diff --git a/lib/time/README b/lib/time/README
index be519fe..d83e0ad 100644
--- a/lib/time/README
+++ b/lib/time/README
@@ -1,4 +1,4 @@
-The zoneinfo directory contains time zone files compiled using
+The zoneinfo.zip archive contains time zone files compiled using
the code and data maintained as part of the IANA Time Zone Database.
The IANA asserts that the database is in the public domain.
@@ -7,3 +7,4 @@
ftp://ftp.iana.org/tz/code/tz-link.htm
http://tools.ietf.org/html/draft-lear-iana-timezone-database-05
+To rebuild the archive, read and run update.bash.
