Fixed

• improve jit error handling
• update JIT compiler to retain state between invocations and define unique function names
• correct long and double jit locals

Other

• add java compatibility tests
• update invokeinterface test to expect interface method
• Fix bug where Instruction::stack_delta panics when processing an InvokeInterface because it calls the wrong try_get*ref function (#319)
• add javac -parameters compiler flag to include parameter metadata in class files
• update jit to track JVM locals as cranelift variables