terminal: use stdout on windows to preserve old behavior

--progress and --log-file should be usable together, but windows
does not currently preserve the original stderr in
config.PasswordPromptOutput; so use stdout explicitly to match the
old behavior.

lib/terminal/terminal.go

@@ -80,8 +80,8 @@ func Start() {
 			// If output is not a tty then remove escape codes
 			Out = colorable.NewNonColorable(f)
 		} else if runtime.GOOS == "windows" && os.Getenv("TERM") != "" {
-			// If TERM is set just use stderr
-			Out = f
+			// If TERM is set just use stdout
+			Out = os.Stdout
 		} else {
 			Out = colorable.NewColorable(f)
 		}