8062373: Project Coin: diamond and anonymous classes
Summary: Allow diamond inference in combination with anonymous class instance creation
Reviewed-by: mcimadamore, vromero
Contributed-by: srikanth.adayapalam@oracle.com, maurizio.cimadamore@oracle.com

8066974: Compiler doesn't infer method's generic type information in lambda body
Summary: Add loghic to avoid post-inference triggers on temporarty AST types
Reviewed-by: jlahoda, vromero