py3: fix the way we produce bytes list in store.py
bytes(range(127)) does not produce a list whereas we need a list. This patch
fixes that.
py3: convert os.__file__ to bytes
os.__file__ returns unicode path on Python 3. We need to have bytespath. This
patch uses pycompat.fsencode() to encode unicode path to bytes path.
commandserver: handle backlog before exiting
Previously, when a chg server is exiting, it does not handle connected
clients so clients may get ECONNRESET and crash:
1. client connect() # success
2. server shouldexit = True and exit
3. client recv() # ECONNRESET
d7875bfbfccb makes this race condition easier to reproduce if a lot of short
chg commands are started in parallel.
This patch fixes the above issue by unlinking the socket path to stop
queuing new connections and processing all pending connections before exit.