Some notes

[Matt Mackall]

FYI, I've merged a bunch of stuff that's been sitting in my local tree
while I get the changes I'm making to push sorted out. I just pushed
the following bits:

   Provides output option to cat command
   Update documentation of hg tag
   Remove debug print from locate code.
   Clarify man page entry for locate a little.
   Use repo.getcwd() in a few obvious places.
   Add locate command.
   Fix quoting for RSS links
   Cleanups for repo.pull
   Add an sshrepository class and hg serve --stdio
   Change remote repository to httprepository
   Add generic repo commands for pull and push
   Add a function to calculate the outgoing changegroup

As for the new push/pull code, I've got most of it working nicely. It
makes the command-level code completely oblivious to the type of
URL/path so it'll be easy drop in, say, push over https with
authentication. There's also an 'hg serve --stdio' for talking over
pipes. It should all show up shortly.

-- 
Mathematics is the supreme nostalgia of our time.