Better error reporting

Decide if there is a way to override the ParseRecord and PackRecord.  I think 
probably not, because we want to make sure all records are encrypted or 
decrypted with the same key.

Support the v5 or newer databases

make example4 actually a gui keyring app

$RedRiver: TODO,v 1.1 2007/01/29 02:49:00 andrew Exp $