8179692: Move RMI spec to specs directory
Reviewed-by: erikj

8177530: Module system implementation refresh (4/2017)
Reviewed-by: mchung, alanb
Contributed-by: alan.bateman@oracle.com, mandy.chung@oracle.com

8044626: Update RMI specifications to reflect modularization changes
8165649: Re-examine if Activatable object can be created from non-public class and/or constructor
Reviewed-by: alanb, mchung

8165261: RMI API to export an object with a serialization filter
Reviewed-by: dfuchs, chegar

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