Merge

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

com.oracle.truffle.r.native/library/fastr/src/R/fastr.R

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

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

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

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

...truffle/r/nodes/builtin/base/HiddenInternalFunctions.java

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

...m/oracle/truffle/r/nodes/builtin/base/RepeatInternal.java

...nodes/src/com/oracle/truffle/r/nodes/RTruffleVisitor.java

...com/oracle/truffle/r/nodes/access/AccessArgumentNode.java

...truffle/r/nodes/access/array/read/PositionsArrayNode.java

...e/r/nodes/access/array/write/PositionsArrayNodeValue.java

.../src/com/oracle/truffle/r/nodes/builtin/RBuiltinNode.java

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

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

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

...m/oracle/truffle/r/nodes/function/DispatchedCallNode.java

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

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