Merge branch 'master' into utf8ToInt_builtin

...fle.r.engine/src/com/oracle/truffle/r/engine/REngine.java

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

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

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

...ibrary/src/com/oracle/truffle/r/library/stats/Dbinom.java

...rc/com/oracle/truffle/r/library/stats/GammaFunctions.java

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

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

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

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

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

...ibrary/src/com/oracle/truffle/r/library/stats/Pbinom.java

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

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

...ibrary/src/com/oracle/truffle/r/library/stats/QHyper.java

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

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

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

...ibrary/src/com/oracle/truffle/r/library/stats/RChisq.java

...ibrary/src/com/oracle/truffle/r/library/stats/RHyper.java