torsocks should log errors to stderr and not stdout

torsocks 2.0.0-rc3

I get stuff like this on stdout:

[Feb 28 14:05:16] WARNING torsocks[22952]: Non TCP inet socket denied. Tor network can't handle it. (in tsocks_socket() at socket.c:40)

Logging to stdout interferes with the output of the underlying program, and is generally a bad idea.