[GR-3689] R like manipulation of TruffleObjects does not work properly.

...tin/src/com/oracle/truffle/r/nodes/builtin/base/Attr.java

...c/com/oracle/truffle/r/nodes/builtin/base/Attributes.java

...c/com/oracle/truffle/r/nodes/builtin/base/UpdateAttr.java

...ruffle/r/nodes/builtin/base/printer/ValuePrinterNode.java

...le.r.runtime/src/com/oracle/truffle/r/runtime/RError.java

...est/src/com/oracle/truffle/r/test/ExpectedTestOutput.test

.../com/oracle/truffle/r/test/library/fastr/TestInterop.java

.../oracle/truffle/r/test/library/fastr/TestJavaInterop.java