fuzzer: some update to the active_events tool
fuzzer: attempt to avoid more signal storms

we were re-entering the signal handler when the ioctl to disable
the event was triggering another event.

try to avoid that.
fuzzer: add define to sync the log file

doesn't seem to help though
fuzzer: add code to pause at beginning, to aid starting ftraces

hasn't seemed to help though.
fuzzer: add "make x32" target

I've been using it for a while