Merge branch 'master' into remove_rconnection_type

ci.hocon

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

...oracle/truffle/r/library/methods/MethodsListDispatch.java

...ibrary/src/com/oracle/truffle/r/library/stats/Covcor.java

com.oracle.truffle.r.native.recommended/.project

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

com.oracle.truffle.r.native/Makefile

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

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

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

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

...in/src/com/oracle/truffle/r/nodes/builtin/base/Array.java

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

...src/com/oracle/truffle/r/nodes/builtin/base/AsVector.java

.../com/oracle/truffle/r/nodes/builtin/base/BasePackage.java

...tin/src/com/oracle/truffle/r/nodes/builtin/base/Bind.java

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

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

...om/oracle/truffle/r/nodes/builtin/base/FileFunctions.java

...om/oracle/truffle/r/nodes/builtin/base/GrepFunctions.java