merge tzcode and tzdata?

[Olson, Arthur David (NCI)]

A few years back we separated the time zone distribution into two parts,
"tzcode" and "tzdata",
with the thought that tzcode might be relatively stable. At the end of 1999,
though, we're at
tzcode1999i.tar.gz and tzdata1999j.tar.gz; so much for relative stability.

My notion is to switch to a merged tz2000a.tar.gz here at the start of the
2000s; any comments?

				--ado