8176482: Use of DirectiveVisitor needs @DefinedBy annotation for RunCodingRules.java
Reviewed-by: jlahoda

8176477: Use DirectiveVisitor to print module information
Reviewed-by: jjg

8172810: ModuleElement should declare and provide appropriate modifiers
Reviewed-by: darcy

8173609: Elements.printElements needs to support modules
Reviewed-by: forax, jjg

8056061: Mark implementations of public interfaces with an annotation
Summary: Adding @DefinedBy annotation to mark methods that implement public API methods; annotating the methods; adding a coding rules analyzer to enforce all such methods are annotated.
Reviewed-by: jjg, mcimadamore, jfranck
Contributed-by: jan.lahoda@oracle.com, jonathan.gibbons@oracle.com

8054834: Modular Source Code
Reviewed-by: alanb, chegar, ihse, mduigou
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com