progress towards loading default/native packages

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

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

com.oracle.truffle.r.native/fficall/jni/src/rfficall.c

com.oracle.truffle.r.native/include/jni/R_ext/Rdynload.h

com.oracle.truffle.r.native/library/lib.mk

com.oracle.truffle.r.native/library/methods/src/init.c

com.oracle.truffle.r.native/library/methods/src/methods.h

.../com/oracle/truffle/r/nodes/builtin/RBuiltinPackages.java

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

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

...cle/truffle/r/nodes/builtin/base/IsMethodsDispatchOn.java

...racle/truffle/r/nodes/builtin/base/PrettyPrinterNode.java

...c/com/oracle/truffle/r/nodes/control/ReplacementNode.java

...com/oracle/truffle/r/runtime/ffi/jnr/CallRFFIWithJNI.java

...e.r.runtime/src/com/oracle/truffle/r/runtime/R/Rprofile.R

...time/src/com/oracle/truffle/r/runtime/RBuiltinLookup.java

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

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

...le.r.runtime/src/com/oracle/truffle/r/runtime/RError.java

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