changed getImage to getDataSource

bindings/java/nbproject/project.xml

...ngs/java/src/org/sleuthkit/datamodel/AbstractContent.java

bindings/java/src/org/sleuthkit/datamodel/Content.java

bindings/java/src/org/sleuthkit/datamodel/DerivedFile.java

bindings/java/src/org/sleuthkit/datamodel/FileSystem.java

bindings/java/src/org/sleuthkit/datamodel/FsContent.java

bindings/java/src/org/sleuthkit/datamodel/Image.java

bindings/java/src/org/sleuthkit/datamodel/LayoutFile.java

bindings/java/src/org/sleuthkit/datamodel/LocalFile.java

bindings/java/src/org/sleuthkit/datamodel/SleuthkitCase.java

...gs/java/src/org/sleuthkit/datamodel/VirtualDirectory.java

bindings/java/src/org/sleuthkit/datamodel/Volume.java

bindings/java/src/org/sleuthkit/datamodel/VolumeSystem.java