* Added Utilities.ConnectionManager.PersistentLogin() that repeatedly attempts to login (with intelligent pauses) until an unrecoverable error is encountered or the login succeeds. Useful for automated logins while the grid is down, a simulator has crashed, or the old login presence hasn't been cleared yet git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@1127 52acb1d6-8a22-11de-b505-999d5b087335