update default log.config_file used by perl workers
update default log.config_file used by perl workers

the existing default log conf file is in a directory that made sense
at yahoo, but doesn't make sense in the open source world.

getgearbox/gearbox,getgearbox/gearbox,getgearbox/gearbox,getgearbox/gearbox,getgearbox/gearbox,getgearbox/gearbox,getgearbox/gearbox