Merge

.../oracle/truffle/r/nodes/builtin/stats/GammaFunctions.java

...c/com/oracle/truffle/r/nodes/builtin/stats/StatsUtil.java

...nodes/src/com/oracle/truffle/r/nodes/RTruffleVisitor.java

...e/r/nodes/access/array/read/MultiDimPosConverterNode.java

...fle/r/nodes/access/array/write/UpdateArrayHelperNode.java

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

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

...le.r.test/src/com/oracle/truffle/r/test/all/AllTests.java

.../com/oracle/truffle/r/test/simple/TestSimpleBuiltins.java

...c/com/oracle/truffle/r/test/simple/TestSimpleVectors.java

mx.fastr/copyrights/gnu_r_qgamma.copyright.star

mx.fastr/copyrights/gnu_r_qgamma.copyright.star.regex