[logback-user] Migrated to JIRA

The logback project now relies on to JIRA instead of Bugzilla as its bug tracking system. Previous bug reports as well existing users in Bugzilla have been migrated to JIRA. Thus, from now on, please use JIRA to create or edit bug reports. The url is: http://jira.qos.ch/ Let me know if you encounter any problems. -- Ceki Gülcü