reduce the number of Arguments subclasses

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

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

...om/oracle/truffle/r/nodes/function/CallArgumentsNode.java

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

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

...es/src/com/oracle/truffle/r/nodes/function/RCallNode.java

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

...racle/truffle/r/nodes/function/call/PrepareArguments.java

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

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