Add load legacy and reindexing tests to the HashDb unit / regression test.
Updated the HashDb TskSqlite schema.
Rename "Hashset Name" to "Hashset Filename".
Merge remote-tracking branch 'sam/hashdb_comments' into hashdb_schema_changes
Merge pull request #258 from rcordovano/hashdb_schema_changes

Hashdb schema changes
Merge branch 'develop' of https://github.com/sleuthkit/sleuthkit into lib_loading