cleanup arithmetic operation whitelist; additional unit test fixes for clean run

...e/src/com/oracle/truffle/r/runtime/ops/BinaryCompare.java

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

...ruffle.r.test/src/com/oracle/truffle/r/test/TestBase.java

...uffle.r.test/src/com/oracle/truffle/r/test/WhiteList.java

...com/oracle/truffle/r/test/generate/TestOutputManager.java

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

.../oracle/truffle/r/test/library/base/TestSimpleValues.java

...oracle/truffle/r/test/library/base/TestSimpleVectors.java