RowSums, ColSums, RowMeans, ColMeans common code refactored including cast pipeline

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

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

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

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

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

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

.../oracle/truffle/r/nodes/builtin/base/RowsumFunctions.java

...time/src/com/oracle/truffle/r/runtime/ops/na/NACheck.java

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

...rc/com/oracle/truffle/r/test/builtins/TestBuiltin_Im.java

...rc/com/oracle/truffle/r/test/builtins/TestBuiltin_Re.java

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

...m/oracle/truffle/r/test/builtins/TestBuiltin_colSums.java

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

...m/oracle/truffle/r/test/builtins/TestBuiltin_rowSums.java

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

...cle/truffle/r/test/library/base/TestSimpleArithmetic.java