enable passing tests

...st/src/com/oracle/truffle/r/test/ArithmeticWhiteList.java

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

...truffle/r/test/builtins/TestBuiltin_attributesassign.java

...src/com/oracle/truffle/r/test/builtins/TestBuiltin_c.java

...cle/truffle/r/test/builtins/TestBuiltin_encodeString.java

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

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

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

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

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

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

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

...cle/truffle/r/test/library/base/TestSimpleArithmetic.java

...rc/com/oracle/truffle/r/test/library/utils/TestUtils.java