Merge

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

...in/src/com/oracle/truffle/r/nodes/builtin/base/R/factor.R

.../src/com/oracle/truffle/r/nodes/control/SequenceNode.java

.../truffle/r/nodes/function/BinaryOpsGroupDispatchNode.java

...racle/truffle/r/nodes/function/GroupDispatchCallNode.java

...acle/truffle/r/nodes/function/NextMethodDispatchNode.java

...c/com/oracle/truffle/r/nodes/function/S3DispatchNode.java

...e/truffle/r/nodes/function/UnaryOpsGroupDispatchNode.java

...racle/truffle/r/nodes/function/UseMethodDispatchNode.java

....runtime/src/com/oracle/truffle/r/runtime/RArguments.java

....r.runtime/src/com/oracle/truffle/r/runtime/RRuntime.java

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

...t/src/com/oracle/truffle/r/test/failing/FailingTests.java

...cle/truffle/r/test/testrgen/TestrGenBuiltinoperators.java