Cast pipelines added to another batch of ext builtins

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

...ibrary/src/com/oracle/truffle/r/library/methods/Slot.java

...rary/src/com/oracle/truffle/r/library/tools/DirChmod.java

...ary/src/com/oracle/truffle/r/library/tools/ToolsText.java

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

...c/com/oracle/truffle/r/nodes/builtin/base/Quantifier.java

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

...time/src/com/oracle/truffle/r/runtime/data/RS4Object.java

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

.../test/library/stats/TestExternal_R_getClassFromCache.java

.../truffle/r/test/library/stats/TestExternal_R_getSlot.java

...ruffle/r/test/library/stats/TestExternal_doTabExpand.java