Renamed m_knownbads and updated some comments.
Call the action callback if a hash is found but there's no original db (in hfind this ensures that feedback is printed to the user on a successful match).
Make hashDatabaseHasLegacyLookupIndexOnly() static.
Bug fixing and refactoring of the sqlite hash lookup functionality.
Merge remote-tracking branch 'sam/hashdb_sqlite' into hashdb_sqlite