8078093: Severe compiler performance regression Java 7 to 8 for nested method invocations
Summary: Add infrastructure to avoid combinatorial explosion of method argument attributions
Reviewed-by: jlahoda, vromero, dlsmith

8019480: Javac crashes when method is called on a type-variable receiver from lambda expression
Summary: Logic for shortcircuiting speculative attribution doesn't handle type-variable receivers
Reviewed-by: jjg, vromero