Ready to deprecate support for JDK 8

[Rick Hillegas]

I am ready to begin the task of deprecating support for JDK 8 and 
converting the Derby build to use JDK 9 instead, as agreed by the 
community last July: 
http://apache-database.10148.n7.nabble.com/RESULT-VOTE-Sunsetting-support-for-Java-8-td147735.html. 
Let me know if I should hold off doing this. Once I check in the 
changes, you will no longer be able to use JDK 8 in order to build 
Derby. Instead, you will need to download JDK 9 for that purpose. You 
can get JDK 9 here: 
http://www.oracle.com/technetwork/java/javase/downloads/jdk9-downloads-3848520.html

Please let me know how you would like me to proceed.
Thanks,

-Rick