Add support for storing hosts in the data_source_info table.

bindings/java/jni/auto_db_java.cpp

bindings/java/jni/auto_db_java.h

bindings/java/jni/dataModel_SleuthkitJNI.cpp

bindings/java/jni/dataModel_SleuthkitJNI.h

...java/src/org/sleuthkit/datamodel/CaseDatabaseFactory.java

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

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

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

...ava/src/org/sleuthkit/datamodel/LocalFilesDataSource.java

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

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

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