Improved test coverage.

src/main/java/org/orekit/rugged/api/RuggedBuilder.java

src/main/java/org/orekit/rugged/errors/DumpReplayer.java

src/main/java/org/orekit/rugged/errors/RuggedException.java

src/test/java/org/orekit/rugged/api/RuggedBuilderTest.java

src/test/java/org/orekit/rugged/errors/DumpManagerTest.java

src/test/java/org/orekit/rugged/errors/DumpReplayerTest.java

...st/java/org/orekit/rugged/errors/RuggedExceptionTest.java

...est/java/org/orekit/rugged/errors/RuggedMessagesTest.java

src/test/resources/replay/replay-direct-loc-04.txt