Several bugs fixed when enabling anomalyDetection package

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

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

...l/src/com/oracle/truffle/r/ffi/impl/nodes/MatchNodes.java

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

...l/src/com/oracle/truffle/r/ffi/impl/nodes/RNCharNode.java

...com/oracle/truffle/r/ffi/impl/upcalls/StdUpCallsRFFI.java

.../src/com/oracle/truffle/r/ffi/processor/FFIProcessor.java

...oracle.truffle.r.native/fficall/src/common/rffi_upcalls.h

...e.truffle.r.native/fficall/src/common/rffi_upcallsindex.h

...ve/fficall/src/truffle_common/Rinternals_truffle_common.h

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

...uffle/r/nodes/access/variables/LocalReadVariableNode.java

...acle.truffle.r.parser/src/com/oracle/truffle/r/parser/R.g

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

...uffle.r.runtime/src/com/oracle/truffle/r/runtime/DCF.java

...om/oracle/truffle/r/test/builtins/TestBuiltin_matmul.java

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