[GR-5543] Improving eval performance.

...fle.r.engine/src/com/oracle/truffle/r/engine/REngine.java

...rc/com/oracle/truffle/r/engine/RRuntimeASTAccessImpl.java

...e/src/com/oracle/truffle/r/engine/interop/RPromiseMR.java

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

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

...om/oracle/truffle/r/library/methods/SubstituteDirect.java

...y/src/com/oracle/truffle/r/library/stats/deriv/Deriv.java

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

...le.truffle.r.native/fficall/src/truffle_llvm/Rinternals.c

...cle.truffle.r.native/fficall/src/truffle_nfi/Rinternals.c

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

...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/Call.java

...rc/com/oracle/truffle/r/nodes/builtin/base/CharMatch.java

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

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

...n/src/com/oracle/truffle/r/nodes/builtin/base/DoCall.java

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

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