[aur-dev] aur session handling

I never realized that the session storage for the aur is using a custom method, and storing the data in a mysql table. I 'noticed' that there were almost a million rows in the aur session table, from back to early 2005. I deleted all sessions that were older than 3 months, and optimized the table. Perhaps the aur code could: 1) use php sessions 2) provide a cleanup script to purge old sessions after some interval. Thanks.