Fix tgz archival on Windows.
Making tgz's on Windows has been broken by 06de65673ec2
due to not being careful enough about binary mode opens.
#!/bin/sh
hg init test
cd test
echo % Without -v
hg serve -a localhost -p 20063 -d --pid-file=hg.pid
cat hg.pid >> "$DAEMON_PIDS"
echo % With -v
hg serve -a localhost -p 20064 -d --pid-file=hg.pid -v
cat hg.pid >> "$DAEMON_PIDS"