[9u Communication] End of maintenance timeframe & invitation for prospective new maintainers

[Rob McKenna]

In line with the new process [1] I'm sending a mail out to notify the community
that the current maintainers intend to step down as maintainers for the JDK 9
Updates forest [2] at the end of March.

This being the case we would like to invite prospective new maintainers to step
forward at this point to ensure a smooth transition should they wish to
maintain this forest beyond the end of March.

Meawhile, we're in the process of preparing a jdk10u forest for this Project,
which I and the other maintainers from Oracle plan to maintain going forward
until we step down. I'll send an update to the alias once it's available.

Also, Dalibor will purchase a beer at next years Fosdem for anyone who
can come up with an equally informative but less clunky subject line for
this mail.

    -Rob

[1] http://mail.openjdk.java.net/pipermail/jdk-updates-dev/2018-February/000064.html
[2] http://hg.openjdk.java.net/jdk-updates/jdk9u