Merge branch 'master' into queryr

ci.hocon

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

...rc/com/oracle/truffle/r/engine/RRuntimeASTAccessImpl.java

...ine/src/com/oracle/truffle/r/engine/TruffleRLanguage.java

...ine/src/com/oracle/truffle/r/engine/interop/REmptyMR.java

...e/truffle/r/engine/interop/RForeignAccessFactoryImpl.java

...com/oracle/truffle/r/engine/interop/RInteropScalarMR.java

...e/src/com/oracle/truffle/r/engine/interop/RMissingMR.java

...oracle/truffle/r/engine/shell/EmbeddedConsoleHandler.java

.../oracle/truffle/r/engine/shell/JLineConsoleCompleter.java

...om/oracle/truffle/r/engine/shell/JLineConsoleHandler.java

...ngine/src/com/oracle/truffle/r/engine/shell/RCommand.java

...m/oracle/truffle/r/engine/shell/StringConsoleHandler.java

.../truffle/r/library/fastrGrid/FastRGridExternalLookup.java

...rary/src/com/oracle/truffle/r/library/fastrGrid/GPar.java

...om/oracle/truffle/r/library/fastrGrid/GridColorUtils.java

...src/com/oracle/truffle/r/library/fastrGrid/GridState.java

...src/com/oracle/truffle/r/library/fastrGrid/GridUtils.java

...com/oracle/truffle/r/library/fastrGrid/LStringMetric.java

.../oracle/truffle/r/library/fastrGrid/PaletteExternals.java