Cleanup of Java code, added copyright

bindings/java/README.txt

bindings/java/build.xml

bindings/java/jni/dataModel_SleuthkitJNI.cpp

bindings/java/jni/dataModel_SleuthkitJNI.h

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

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

bindings/java/src/org/sleuthkit/datamodel/File.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/Sleuthkit.java

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

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

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

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

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

tsk3/auto/auto.cpp

tsk3/auto/auto_db.cpp

tsk3/auto/tsk_auto.h