Implemented Rf_copyMatrix() and related fixes.

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

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

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

...src/com/oracle/truffle/r/nodes/ffi/FFIUpCallRootNode.java

...c/com/oracle/truffle/r/nodes/ffi/JavaUpCallsRFFIImpl.java

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

.../src/com/oracle/truffle/r/nodes/ffi/RFFIUpCallMethod.java

...om/oracle/truffle/r/nodes/ffi/TracingUpCallsRFFIImpl.java

.../truffle/r/nodes/objects/CollectGenericArgumentsNode.java

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

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

.../com/oracle/truffle/r/test/builtins/TestBuiltin_prod.java