[GR-4120] Extend interop capabilities.

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

...src/com/oracle/truffle/r/nodes/unary/CastComplexNode.java

.../src/com/oracle/truffle/r/nodes/unary/CastDoubleNode.java

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

...src/com/oracle/truffle/r/nodes/unary/CastIntegerNode.java

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

...src/com/oracle/truffle/r/nodes/unary/CastLogicalNode.java

...des/src/com/oracle/truffle/r/nodes/unary/CastRawNode.java

.../src/com/oracle/truffle/r/nodes/unary/CastStringNode.java

.../src/com/oracle/truffle/r/nodes/unary/CastSymbolNode.java

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

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

...le.r.runtime/src/com/oracle/truffle/r/runtime/RError.java

.../com/oracle/truffle/r/runtime/interop/ForeignArray2R.java

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

...ruffle.r.test/src/com/oracle/truffle/r/test/TestBase.java

.../oracle/truffle/r/test/library/fastr/TestJavaInterop.java