Review Request: JDK-8166238 Update jdeps for GNU-style long form options

[Mandy Chung]

Webrev:
  http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8166238/webrev.00/index.html

This patch renames the following options added in JDK 9 jdeps
  --gen-module-info => —generate-module-info
  -inverse          => —-inverse
  -requires         => —-require

and also adds the long-form option corresponding to a few existing options:
  —-api-only
  —-dot-output
  -—jdk-internals
  —-package
  —-regex
  -—version

Mandy