cleanups

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

...oracle/truffle/r/engine/shell/EmbeddedConsoleHandler.java

...gine/src/com/oracle/truffle/r/engine/shell/REmbedded.java

...ffle/r/ffi/impl/llvm/TruffleLLVM_DownCallNodeFactory.java

...uffle/r/ffi/impl/managed/Managed_DownCallNodeFactory.java

...rc/com/oracle/truffle/r/ffi/impl/nfi/TruffleNFI_Call.java

...com/oracle/truffle/r/ffi/impl/nfi/TruffleNFI_Context.java

...ruffle/r/ffi/impl/nfi/TruffleNFI_DownCallNodeFactory.java

...racle/truffle/r/ffi/impl/nodes/AttributesAccessNodes.java

...pl/src/com/oracle/truffle/r/ffi/impl/nodes/MiscNodes.java

...l/src/com/oracle/truffle/r/ffi/impl/nodes/RfEvalNode.java

....launcher/src/com/oracle/truffle/r/launcher/Launcher.java

...uncher/src/com/oracle/truffle/r/launcher/RCmdOptions.java

...ncher/src/com/oracle/truffle/r/launcher/RStartParams.java

...om/oracle/truffle/r/library/fastrGrid/GridColorUtils.java

...rary/src/com/oracle/truffle/r/library/fastrGrid/Unit.java

...src/com/oracle/truffle/r/library/fastrGrid/color/RGB.java

.../oracle/truffle/r/library/fastrGrid/device/SVGDevice.java

...ffle/r/library/fastrGrid/device/awt/Graphics2DDevice.java

.../truffle/r/library/fastrGrid/device/awt/JFrameDevice.java