On FreeBSD 8.2, the control port command `SIGNAL DUMP` fails: ``` signal dump 250 OK 650 WARN control_signal_act(): Bug: Unrecognized signal number 30. ``` This occurs because we use the platform's definition of `SIGUSR1` (in this case, `30`) in `handle_control_signal` in src/or/control.c, but `control_signal_act` in src/or/main.c expects the Linux-specific value `10`. (This problem doesn't appear on Windows because src/or/or.h defines the signal values we use if the platform header files do not.)