[GR-7411] Use VectorAccess in CastIntegerNode and CastIntegerBaseNode.

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

...src/com/oracle/truffle/r/library/stats/RMultinomNode.java

...om/oracle/truffle/r/library/stats/RandFunctionsNodes.java

...y/src/com/oracle/truffle/r/library/utils/TypeConvert.java

...library/src/com/oracle/truffle/r/library/utils/Unzip.java

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

...e/truffle/r/nodes/builtin/base/printer/VectorPrinter.java

...fle/r/nodes/access/vector/PositionCheckSubscriptNode.java

.../src/com/oracle/truffle/r/nodes/builtin/InternalNode.java

.../oracle/truffle/r/nodes/builtin/RExternalBuiltinNode.java

.../oracle/truffle/r/nodes/builtin/casts/PipelineConfig.java

...cle/truffle/r/nodes/builtin/casts/PipelineToCastNode.java

...e/r/nodes/builtin/casts/fluent/PipelineConfigBuilder.java

.../r/nodes/builtin/casts/fluent/PreinitialPhaseBuilder.java

.../src/com/oracle/truffle/r/nodes/control/OperatorNode.java

.../com/oracle/truffle/r/nodes/function/CallMatcherNode.java

...es/src/com/oracle/truffle/r/nodes/function/RCallNode.java

...com/oracle/truffle/r/nodes/function/RCallSpecialNode.java

...es/src/com/oracle/truffle/r/nodes/unary/CastBaseNode.java

...com/oracle/truffle/r/nodes/unary/CastIntegerBaseNode.java