* Makefile (VERSION): New macro, superseding ...
(TZCODE_VERSION, TZDATA_VERSION): Remove. All uses changed.
(version.h): Call the variable TZVERSION, not TZCODE_VERSION.
All uses changed.
(tzselect): Interpolate TZVERSION, not TZCODE_VERSION.
(public): Adjust to new versioning scheme.
* tzselect.ksh (TZVERSION): Rename from TZCODE_VERSION.
* zdump.c, zic.c (main): Use TZVERSION, not TZCODE_VERSION.
* Makefile (TZCODE_VERSION): Increase to tzcode2012c.
(TZDATA_VERSION, GNUTARFLAGS, TARFLAGS, GZIPFLAGS): New macros.
(maintainer-clean): Remove all the old tar.gz files.
(set-timestamps): New rule.
(public): Use it. Create distribution files that are more
reproducible, by omitting irrelevant information such as the time
of checkout or build, the builder's user name, the builder's
locale, and so forth. Be more careful about file permissions in /tmp.
* README, tz-link.htm: Mention ftp.iana.org instead of munnari.oz.au.
Suggest --retr-symlinks, since iana.org has symlinks to latest.
* README: Add a title line.