8147558: Add support for ES6 collections
Reviewed-by: attila, mhaupt

8144020: Remove long as an internal numeric type
Reviewed-by: attila, sundar, lagergren

8141702: Add support for Symbol property keys
Reviewed-by: attila, sundar

8139931: Introduce Operation objects in Dynalink instead of string encoding
Reviewed-by: hannesw, sundar

8134403: Nashorn react.js benchmark performance regression
Reviewed-by: hannesw, sundar

8062401: User accessors require boxing and do not support optimistic types
Reviewed-by: jlaskey, lagergren

8025435: Optimistic builtins support, implemented initial optimistic versions of push, pop, and charCodeAt
Reviewed-by: attila, hannesw, sundar

8057021: UserAccessorProperty guards fail with multiple globals
Reviewed-by: attila, lagergren

Merge

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