Changes file for bug2355.
|o Major features:|
|- If "UseBridges 1" is set and no bridges are configured, Tor will|
|now refuse to build any circuits until some bridges are set.|
|If "UseBridges auto" is set, Tor will use bridges if they are|
|configured and we are not running as a server, but otherwise|
|will make circuits as usual. The new default is "auto". Patch|