Commit Briefs
Try to avoid races in underlying C library
during threadexitsall.
add _procwakeupandunlock
to help ease locking contention on Linux 2.4.
add some annoying lock loop prints -- let's see
if they ever fire. also fix race in delaystack. it was actually happening! that just goes to show that while i can reason very well about what can and cannot happen, i have no intuition at all for how likely they are.
restore old plan 9 property that when the
last thread exits the main proc, the remaining program ends up in the background and the program appears to have exited.