The idea is that any off the other components (with lower priority than jlog) may feel entitled to use logging during startup/closedown (as jdebug did, for example). So jlog needs to be higher priority than the others.

I did test forcing some logging out in the jdebug init code, and it works (with this change).

I don't believe jlog has any dependencies on other components (but please feel free to check) and did not see any issues on closedown.