onto a worker thread (falling back to the current (=acceptor) thread
if the pool is empty.

Use this to save a little bit of stack on common requests.

Rename pool_func_t to task_func_t.

Annotate the task functions with __match_proto__

from FlexeLint.

socket (re)open code.

in order to prevent other processes from stealing them.

(We have to close & reopen when the client dies, there is no unlisten(2))

Thank you, fgs

a test-case to cover this case.

on using the same ones across restarts.