tests/test-serve

Add test reproducing a bug in "hg serve -v"

#!/bin/sh

hg init test
cd test

echo % Without -v
hg serve -a localhost -p 20063 -d --pid-file=hg.pid
kill `cat hg.pid`

echo % With -v
hg serve -a localhost -p 20063 -d --pid-file=hg.pid -v
kill `cat hg.pid`