Review Request: JDK-8160698 java --dry-run should not cause main class be initialized

[Mandy Chung]

Kumar,

I move the call to CreateApplicationArgs before PostJVMInit and dryRun stops before PostJVMInit which shows the splash screen.

Webrev:
  http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8160698/webrev.00/index.html

This also cleans up the LauncherHelper to use Class::forName instead of loadClass.

Mandy