httprepo: record the url after a request, makes pull + redirect works POST+redirect doesn't work in python, as a workaround we record the url from the previous GETs so that when we do a POST it uses the redirected url fix issue327

#!/bin/sh

mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m "test" -d "1000000 0"
hg verify
hg parents
hg status
hg rollback
hg verify
hg parents
hg status