Please review fix [2] for jpackage bug [1].
Move functionality to collect data about app (main class name, main jar,
module name, etc) from JLinkBundlerHelper and StandardBundlerParam
classes in dedicated LauncherData class.
Remove ArgAction, ModFile and RelativeFileSet classes as they are not
needed any more after refactoring of JLinkBundlerHelper and
StandardBundlerParam classes.
Clean unused code.
- Alexey
[1] https://bugs.openjdk.java.net/browse/JDK-8246624
[2] http://cr.openjdk.java.net/~asemenyuk/8246624/webrev.00
