enable some more tests

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

...le.r.test/src/com/oracle/truffle/r/test/all/AllTests.java

...t/src/com/oracle/truffle/r/test/failing/FailingTests.java

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

...cle/truffle/r/test/library/base/TestSimpleDataFrames.java

...oracle/truffle/r/test/library/base/TestSimpleVectors.java

...oracle/truffle/r/test/testrgen/TestrGenBuiltinReduce.java

...ruffle/r/test/testrgen/TestrGenBuiltinallequalPOSIXt.java

...oracle/truffle/r/test/testrgen/TestrGenBuiltinappend.java

...cle/truffle/r/test/testrgen/TestrGenBuiltinascomplex.java

...cle/truffle/r/test/testrgen/TestrGenBuiltinasinteger.java

...acle/truffle/r/test/testrgen/TestrGenBuiltinasvector.java

.../oracle/truffle/r/test/testrgen/TestrGenBuiltinatan2.java

...cle/truffle/r/test/testrgen/TestrGenBuiltincharToRaw.java

...oracle/truffle/r/test/testrgen/TestrGenBuiltinexists.java

...rgen/TestrGenBuiltinextract_parentasis_assign_factor.java

...nextract_parentasis_extract_parentasis_assign_factor.java

...m/oracle/truffle/r/test/testrgen/TestrGenBuiltingsub.java

...cle/truffle/r/test/testrgen/TestrGenBuiltiniscomplex.java

...m/oracle/truffle/r/test/testrgen/TestrGenBuiltinisna.java