inotify: add a inotify.pidfile configuration possibility
This will mainly help us in our tests to log pids of inotify servers
started implicitely, to make sure that unkilled inotify daemons do not clutter
the output of unrelated tests.
Also desactivate the workaround introduced in
951ec6c7d703
cmdutil.service: do not _exit(0) in the parent process
The fact that a parent process spawns a daemon does not necessarily means that
it is the only think it has to do. This was forcing since
7c01599dd340 inotify
processes launched implicitely to exit prematurely:
when no inotify server was running, "hg st" for example would only launch a
inotify server, _exit(0) and thus would not return file statuses.
This changeset adds a test for implicitely launched inotify processes.
Change to output of test-inotify-1208 is correct: it reflects the normal
error message of "hg st" when not dying during "hg inserve" daemon creation.