-* Revoked keys on index.
* Check keys on import?
* Better signature subpacket parsing (primary UID for example).
* Better merging of signatures; need to compare subpackets on Type 4 packets
* More comments.
* Look at db2 backend - is it db2's fault? (Well, deadlock in that the library
probably is...). Pull some of the DB3 stuff across for completeness.
+* Add Ian Haywood's path.c code for path finding and returning the actual keys.