docs: add code review scenario to sharing guide
The idea is to demonstrate a simpler multiple-developer situation that
does not involve getting into trouble.
The final scenario illustrates Alice and Bob getting into trouble with
bumped and divergent changesets by amending each other's history. The
required tests and text are all written, but will need to be heavily
revised because of the inserted scenario.
#!/usr/bin/env python
import os, time, errno, signal
# Kill off any leftover daemon processes
try:
fp = open(os.environ['DAEMON_PIDS'])
for line in fp:
try:
pid = int(line)
except ValueError:
continue
try:
os.kill(pid, 0)
os.kill(pid, signal.SIGTERM)
for i in range(10):
time.sleep(0.05)
os.kill(pid, 0)
os.kill(pid, signal.SIGKILL)
except OSError, err:
if err.errno != errno.ESRCH:
raise
fp.close()
except IOError:
pass