8176472: Lazily create ModuleEntryTable Summary: Moved the unnamed module out of the ModuleEntryTable and into the ClassLoaderData so that the MET can be lazily created only when other modules are present. Also a smaller PackageTable size. Reviewed-by: gtriantafill, hseigel, lfoltan, coleenp

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
.DS_Store
.metadata/
.recommenders/