various minor changes for clean gate build

ci.hocon

...ine/src/com/oracle/truffle/r/engine/TruffleRLanguage.java

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

com.oracle.truffle.r.native/fficall/src/jniboot/jniboot.c

com.oracle.truffle.r.native/gnur/Makefile.libs

...e.ffi/src/com/oracle/truffle/r/runtime/ffi/jni/JNI_C.java

...fi/src/com/oracle/truffle/r/runtime/ffi/jni/JNI_PCRE.java

...ffi/src/com/oracle/truffle/r/runtime/ffi/jni/JNI_Zip.java

...runtime/src/com/oracle/truffle/r/runtime/ffi/ZipRFFI.java

mx.fastr/mx_copylib.py

mx.fastr/mx_fastr.py

mx.fastr/mx_findlib.py