Insert filename, if given, to the names table.
Fix compile error in hfind due to func signature change.
Check for NULL args in tsk_hdb_add_str(), and make constness of string params consistent.
Now propagating all the hashDB info from the sqlite_index code through JNI lookup verbose.
Added ability to get the correct hash_id.
Fix problem of not setting the current hash id in the right place.
Fix bug of assuming that vectors had size > 0.
Merge remote-tracking branch 'sam/hashdb_comments' into hashdb_comments