enable passing tests

...uffle.r.test/src/com/oracle/truffle/r/test/S4/TestS4.java

...racle/truffle/r/test/builtins/TestBuiltin_attributes.java

.../com/oracle/truffle/r/test/builtins/TestBuiltin_eval.java

...oracle/truffle/r/test/builtins/TestBuiltin_identical.java

...acle/truffle/r/test/builtins/TestBuiltin_primUntrace.java

...uffle/r/test/builtins/TestBuiltin_storagemodeassign_.java

...m/oracle/truffle/r/test/builtins/TestBuiltin_unclass.java

.../com/oracle/truffle/r/test/builtins/TestMiscBuiltins.java