Revised proposal for #AutomaticModuleNames

[mark.reinhold at oracle.com]

Thanks to everyone, and especially Stephen Colebourne, Brian Fox, and
Robert Scholte, for the extensive feedback.

  http://mail.openjdk.java.net/pipermail/jpms-spec-experts/2017-May/000687.html

TL;DR: Keep automatic modules, bring back the module-name JAR-file
manifest attribute, and strongly recommend reverse-DNS module names.

Comments?

- Mark