consolidate rfficall/appl libs as libR

com.oracle.truffle.r.native/Makefile

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

com.oracle.truffle.r.native/builtinlibs/src/xerbla.c

com.oracle.truffle.r.native/fficall/src/common/common.mk

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

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

com.oracle.truffle.r.native/library/stats/Makefile

...rc/com/oracle/truffle/r/runtime/ffi/jnr/JNI_CallRFFI.java

...i/src/com/oracle/truffle/r/runtime/ffi/jnr/JNR_RAppl.java

mx.fastr/copyrights/overrides