[GR-6406] More additions to package testing.

COPYING

...ser/src/com/oracle/truffle/r/parser/ParserGeneration.java

...acle.truffle.r.parser/src/com/oracle/truffle/r/parser/R.g

...ntime/src/com/oracle/truffle/r/runtime/data/RPromise.java

com.oracle.truffle.r.test.packages/gated

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

...test/src/com/oracle/truffle/r/test/parser/TestParser.java

....test/src/com/oracle/truffle/r/test/tck/FastRTckTest.java

mx.fastr/mx_fastr_pkgs.py