Swtiched maven configuration to multi-modules.

BUILDING.txt

aster/pom.xml

aster/src/main/assembly/binary-assembly.xml

aster/src/main/assembly/building-files.xml

aster/src/main/assembly/jar-files.xml

aster/src/main/assembly/misc-files.xml

aster/src/main/assembly/source-assembly.xml

...r/src/main/java/org/orekit/rugged/aster/AngulerUnits.java

.../src/main/java/org/orekit/rugged/aster/AsterMessages.java

...c/main/java/org/orekit/rugged/aster/AsterTileUpdater.java

aster/src/main/java/org/orekit/rugged/aster/GeoKey.java

...g/orekit/rugged/aster/GeographicCoordinateSystemType.java

aster/src/main/java/org/orekit/rugged/aster/LinearUnits.java

aster/src/main/java/org/orekit/rugged/aster/ModelType.java

aster/src/main/java/org/orekit/rugged/aster/RasterType.java

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

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

.../test/java/org/orekit/rugged/aster/AsterMessagesTest.java

...st/java/org/orekit/rugged/aster/AsterTileUpdaterTest.java

...sources/org/orekit/rugged/geotiff/ASTER-files-warning.txt