Merged.

...s/src/com/oracle/truffle/r/nodes/builtin/base/Covcor.java

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

...s/src/com/oracle/truffle/r/nodes/builtin/base/Recall.java

...rc/com/oracle/truffle/r/nodes/builtin/base/Transpose.java

...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

...om/oracle/truffle/r/test/simple/TestSimpleArithmetic.java

.../com/oracle/truffle/r/test/simple/TestSimpleBuiltins.java

mx.fastr/imports

mx.fastr/mx_fastr.py