[SECURITY] Fedora 15 Update: trytond-1.8.6-1.fc15

Tryton is a three-tiers high-level general purpose application framework written in Python and use PostgreSQL as database engine. It is the core base of an Open Source ERP. It provides modularity, scalability and security. The core of Tryton (also called Tryton kernel) provides all the necessary functionalities for a complete application framework: data persistence (i.e an ORM with extensive modularity), users management (authentication, fine grained control for data access, handling of concurrent access of resources ), workflow and report engines, web services and internationalisation. Thus constituting a complete application platform which can be used for any relevant purpose.