Mercurial update

[Mark Reinhold]

In December we officially switched from TeamWare, the old Sun-internal
source-code management system, to Mercurial.

No changesets have yet been pushed into the JDK 7 repositories because
the last few remaining bits of infrastructure are not yet complete.
These include a small Mercurial extension to check changeset comments,
legal notices, and repository invariants, and also the core community
database, which tracks Members, Groups, Projects, repositories, and the
relationships between all these things.  (The extension will, naturally,
be published under the GPL for use outside of Sun.)

Those remaining bits should be done in the next week or two, at which
point the changesets can start flowing.

For some additional perspective please see John Rose's message to
build-dev earlier this morning [1].

In retrospect it was, perhaps, premature to do the cutover in December,
without every last bit of the infrastructure up and running, but we are
where we are.

- Mark


[1] http://mail.openjdk.java.net/pipermail/build-dev/2008-January/000720.html