refactor fficall

com.oracle.truffle.r.native/fficall/Makefile

com.oracle.truffle.r.native/fficall/README

com.oracle.truffle.r.native/fficall/src/common/Defn.h

com.oracle.truffle.r.native/fficall/src/common/Graphics.h

...oracle.truffle.r.native/fficall/src/common/GraphicsBase.h

com.oracle.truffle.r.native/fficall/src/common/Internal.h

com.oracle.truffle.r.native/fficall/src/common/Print.h

com.oracle.truffle.r.native/fficall/src/common/Rgraphics.h

com.oracle.truffle.r.native/fficall/src/common/appl_pretty.c

com.oracle.truffle.r.native/fficall/src/common/arithmetic.c

com.oracle.truffle.r.native/fficall/src/common/coerce.c

com.oracle.truffle.r.native/fficall/src/common/inlined.c

com.oracle.truffle.r.native/fficall/src/common/main_colors.c

...oracle.truffle.r.native/fficall/src/common/main_devices.c

com.oracle.truffle.r.native/fficall/src/common/main_engine.c

com.oracle.truffle.r.native/fficall/src/common/main_format.c

...racle.truffle.r.native/fficall/src/common/main_graphics.c

com.oracle.truffle.r.native/fficall/src/common/main_plot.c

com.oracle.truffle.r.native/fficall/src/common/main_plot3d.c

...racle.truffle.r.native/fficall/src/common/main_plotmath.c