3 - Ensure that variables set in Tor's environment cannot override
4 environment variables which Tor tries to pass to a managed
5 pluggable-transport proxy. Previously, Tor would pass every
6 variable in its environment to managed proxies along with the
7 new ones, in such a way that on many operating systems, the
8 inherited environment variables would override those which Tor
9 tried to explicitly set. Bugfix on 0.2.3.12-alpha for most
10 Unixoid systems; bugfix on 0.2.3.9-alpha for Windows.