Revert "Use exceptions rather than null for inverse location errors."

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

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

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

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

...it/rugged/errors/InverseLocOutOfColumnRangeException.java

...ekit/rugged/errors/InverseLocOutOfLineRangeException.java

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

...org/orekit/rugged/linesensor/SensorMeanPlaneCrossing.java

...ava/org/orekit/rugged/linesensor/SensorPixelCrossing.java

...resources/assets/org/orekit/rugged/RuggedMessages_de.utf8

...resources/assets/org/orekit/rugged/RuggedMessages_en.utf8

...resources/assets/org/orekit/rugged/RuggedMessages_es.utf8

...resources/assets/org/orekit/rugged/RuggedMessages_fr.utf8

...resources/assets/org/orekit/rugged/RuggedMessages_gl.utf8

...resources/assets/org/orekit/rugged/RuggedMessages_it.utf8

...resources/assets/org/orekit/rugged/RuggedMessages_no.utf8

...resources/assets/org/orekit/rugged/RuggedMessages_ro.utf8

src/site/xdoc/changes.xml

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

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