hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
all repository classes now have url() method that returns url of repo.
#!/bin/shunset HGUSEREMAIL="My Name <myname@example.com>"export EMAILhg init testcd testtouch asdfhg add asdfhg commit -d '1000000 0' -m commit-1hg tip