concurrency.distributed: simplify a bit, mostly because...
concurrency.distributed: simplify a bit, mostly because...

... I'm not a fan of thd instead of thread, and it seemed (to me)
a little cleaner inlining assoc instead of using get/set words.

factor/factor,mrjbq7/factor,AlexIljin/factor,AlexIljin/factor,factor/factor,factor/factor,mrjbq7/factor,mrjbq7/factor,factor/factor,bpollack/factor,tgunr/factor,mrjbq7/factor,mrjbq7/factor,AlexIljin/factor,bpollack/factor,bpollack/factor,factor/factor,AlexIljin/factor,mrjbq7/factor,bpollack/factor,factor/factor,tgunr/factor,tgunr/factor,bpollack/factor,tgunr/factor,bpollack/factor,bpollack/factor,AlexIljin/factor,tgunr/factor,AlexIljin/factor,AlexIljin/factor,tgunr/factor