serve: respect settings from .hg/hgrc
create_server was looking only at the root ui object, ignoring any
settings from .hg/hgrc. To keep respecting command-line arguments,
commands.serve must also call repo.ui.setconfig.
#!/bin/sh
hg init test
cd test
mkdir da
echo foo > da/foo
echo foo > foo
hg ci -Ambase -d '0 0'
hg serve -p 20060 -d --pid-file=hg.pid
echo % manifest
("$TESTDIR/get-with-headers.py" localhost:20060 '/file/tip/?style=raw')
("$TESTDIR/get-with-headers.py" localhost:20060 '/file/tip/da?style=raw')
kill `cat hg.pid`