Merge

...fle.r.engine/src/com/oracle/truffle/r/engine/REngine.java

.../oracle/truffle/r/nodes/builtin/base/AttachFunctions.java

...n/src/com/oracle/truffle/r/nodes/builtin/base/DoCall.java

...com/oracle/truffle/r/nodes/builtin/base/EnvFunctions.java

...n/src/com/oracle/truffle/r/nodes/builtin/base/Lapply.java

.../src/com/oracle/truffle/r/nodes/builtin/base/UnClass.java

...fle.r.nodes/src/com/oracle/truffle/r/nodes/RASTUtils.java

...racle/truffle/r/nodes/access/array/ArrayPositionCast.java

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

.../com/oracle/truffle/r/nodes/function/ArgumentMatcher.java

.../src/com/oracle/truffle/r/nodes/function/PromiseNode.java

...acle.truffle.r.parser/src/com/oracle/truffle/r/parser/R.g

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

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

.../com/oracle/truffle/r/runtime/conn/ConnectionSupport.java

...e/src/com/oracle/truffle/r/runtime/data/RDataFactory.java

...me/src/com/oracle/truffle/r/runtime/env/REnvironment.java

...e/truffle/r/runtime/env/frame/REnvTruffleFrameAccess.java

...time/src/com/oracle/truffle/r/runtime/ops/na/NACheck.java

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