default fresh_start to no-debug, and correct the killall

@cscheid, @s-u:  I find the fresh_start script useful.  But apparently it's not good to run in debug mode, and I also noticed that the `killall` has gone stale (wrong process name).

Instead of just saying "fresh_start doesn't work", is this a reasonable fix?  It still allows running in debug mode by adding `-d` but it defaults to no debug.