[GR-2798] Fix rffitests.

ci.hocon

...oracle/truffle/r/ffi/impl/common/JavaUpCallsRFFIImpl.java

....impl/src/com/oracle/truffle/r/ffi/impl/nodes/ATTRIB.java

...om/oracle/truffle/r/ffi/impl/nodes/FFIUpCallRootNode.java

...pl/src/com/oracle/truffle/r/ffi/impl/nodes/MiscNodes.java

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

com.oracle.truffle.r.native/version.source

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

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

...c/com/oracle/truffle/r/nodes/builtin/base/Attributes.java

.../oracle/truffle/r/nodes/attributes/GetAttributesNode.java

...s/src/com/oracle/truffle/r/nodes/control/RLengthNode.java

com.oracle.truffle.r.test.native/packages/pkg-filelist

...fle.r.test.native/packages/testrffi/testrffi/R/testrffi.R

...uffle.r.test.native/packages/testrffi/testrffi/src/init.c

...e.r.test.native/packages/testrffi/testrffi/src/testrffi.c

...e.r.test.native/packages/testrffi/testrffi/src/testrffi.h

...est.native/packages/testrffi/testrffi/tests/simpleTests.R

...est/src/com/oracle/truffle/r/test/ExpectedTestOutput.test

.../oracle/truffle/r/test/builtins/TestBuiltin_asvector.java