"Ignored" test traits, pass exceptions through to junit tests

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

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

...ruffle.r.test/src/com/oracle/truffle/r/test/TestBase.java

...uffle.r.test/src/com/oracle/truffle/r/test/TestTrait.java

.../src/com/oracle/truffle/r/test/generate/FastRSession.java

...test/src/com/oracle/truffle/r/test/generate/RSession.java

...com/oracle/truffle/r/test/generate/TestOutputManager.java

...m/oracle/truffle/r/test/library/base/TestConnections.java

...rc/com/oracle/truffle/r/test/rpackages/TestRPackages.java

.../src/com/oracle/truffle/r/test/tools/AnalyzeRBuiltin.java