8149451: Fix bytecode generation issue after 8149186
Reviewed-by: mhaupt, sundar

8149462: revert changes for 8149186
Reviewed-by: jlaskey, sundar

8149186: Don't use indy for optimistic arithmetic
Reviewed-by: mhaupt, sundar

8098847: obj."prop" and obj.'prop' should result in SyntaxError
Reviewed-by: hannesw, attila

8059843: Make AST serializable
Reviewed-by: hannesw, lagergren

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