Summary:
- Javac code may be used to generate Java class dynamically, so have
  to be taken care of
- Fixed cross-tenant classloader hierarchy
- Isolated ZipFileIndexCache.sharedInstance

Test Plan: langtools/test/multi-tenant

Reviewed-by: yuleil, superajun-wsj

Issue: https://github.com/alibaba/dragonwell8/issues/84

Reviewed-by: darcy

Reviewed-by: darcy

Reviewed-by: jjg

Reviewed-by: vromero, darcy

Reviewed-by: jjg

Reviewed-by: jjg, mcimadamore

Reviewed-by: darcy

Reviewed-by: darcy

Reviewed-by: mcimadamore

Reviewed-by: mcimadamore, darcy, ohrstrom

Reviewed-by: mcimadamore

7032972: API files in javax.tools need to updated for references to JVM Spec with editions/hyperlinks
7032978: API files in javax.tools need to be updated for references to JLS with editions/hyperlinks
Summary: Removed URLs and 'edition' references
Reviewed-by: jjg, darcy

Reviewed-by: mcimadamore

Reviewed-by: mcimadamore

Reviewed-by: xdono

Reviewed-by: darcy

Reviewed-by: darcy

Reviewed-by: darcy

Reviewed-by: darcy, alanb

6747645: ZipFileObject.getName is incorrectly deprecated
6885123: JavaFileObject getName issues
Reviewed-by: mcimadamore

Reviewed-by: jjg

Summary: Update copyright for files that have been modified starting July 2008 to Dec 2008
Reviewed-by: katleman, ohair, tbell

Summary: Update for files that have been modified starting July 2008
Reviewed-by: ohair, tbell

Reviewed-by: mcimadamore

Reviewed-by: mcimadamore