[GR-10440] Support optional build of FastR native image in GraalVM.

ci.hocon

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

...gine/src/com/oracle/truffle/r/engine/shell/REmbedded.java

...r.engine/src/com/oracle/truffle/r/engine/shell/RMain.java

...her/src/com/oracle/truffle/r/launcher/ConsoleHandler.java

.../com/oracle/truffle/r/launcher/JLineConsoleCompleter.java

...rc/com/oracle/truffle/r/launcher/JLineConsoleHandler.java

...uncher/src/com/oracle/truffle/r/launcher/RCmdOptions.java

...le.r.launcher/src/com/oracle/truffle/r/launcher/REPL.java

...e.r.launcher/src/com/oracle/truffle/r/launcher/RMain.java

...ncher/src/com/oracle/truffle/r/launcher/RStartParams.java

...her/src/com/oracle/truffle/r/launcher/RscriptCommand.java

com.oracle.truffle.r.native/run/Makefile

com.oracle.truffle.r.native/run/install_r_native_image

...acle/truffle/r/nodes/builtin/base/DatePOSIXFunctions.java

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

...cle/truffle/r/nodes/builtin/fastr/FastRInitEventLoop.java

com.oracle.truffle.r.release/src/R_legacy

com.oracle.truffle.r.release/src/Rscript_legacy

...runtime/src/com/oracle/truffle/r/runtime/FastRConfig.java