consider all first-reachable ph BCs
consider all first-reachable ph BCs

This extends the same notion already
used for velocity to the other BCs,
so far the rules are first-reachable
and zero values override

YetAnotherMinion/core,yangf4/core,yangf4/core,yangf4/core,YetAnotherMinion/core,YetAnotherMinion/core,YetAnotherMinion/core,yangf4/core,yangf4/core,YetAnotherMinion/core