JDK submit repo

[mark.reinhold at oracle.com]

The submit repo is now open for pushes from any JDK Committer:

  http://hg.openjdk.java.net/jdk/submit

If you push a branch whose name starts with "JDK-" into this repo
then it will automatically be built and tested on Oracle's internal
build system, and a summary of the results will be e-mailed back to
you.  This typically takes a couple of hours.  If one or more tests
fail then you can contact an Oracle engineer to get more information
about the failures.

The default branch of the submit repo is automatically kept in sync
with the main-line repo, jdk/jdk.

This is (obviously) not the complete open build-and-test system that
we'd all like to see in the long run, but until we have such a system
it will hopefully help us be a bit more productive.

More information:

  https://wiki.openjdk.java.net/display/Build/Submit+Repo

(Unlike the first prototype, which some of you helped to test last
 summer, this version does not automatically push your change into
 some other repo if all the tests pass, and there are no plans to
 implement that feature due to recent build-system changes.)

- Mark