8020149: Graph inference: wrong logic for picking best variable to solve
Summary: Replace logic for selecting best inference leaf in the graph during an unsticking round
Reviewed-by: jjg
8016640: compiler hangs if the generics arity of a base class is wrong
Summary: Check.checkCompatibleConcretes hang when javac creates synthetic supertypes for 269 model API
Reviewed-by: jjg
7041019: Bogus type-variable substitution with array types with dependencies on accessibility check
Summary: call to upperBound() when performing type-variable substitution on element type leads to unsoundness
Reviewed-by: jjg