Merge lp://staging/~dave-cheney/juju-core/092-juju-conn-add-mstate-info into lp://staging/~juju/juju-core/trunk

Unmerged revisions

464. By Dave Cheney on 2012-09-11

merge from trunk

463. By Dave Cheney on 2012-09-07

implement UseSSH forwarding

462. By Dave Cheney on 2012-09-06

ssh support

461. By Dave Cheney on 2012-09-06

move sshtest to shared location

460. By Frank Mueller on 2012-09-04

provisioner: changed environment config. test

The tests now check that a changing environment configuration
is watched by the provisioner and passed to the environment.

R=niemeyer
CC=
https://codereview.appspot.com/6488057

459. By Frank Mueller on 2012-09-04

mstate: changed EnvironConfig like in state

EnvironConfig now returns environs/config.Config like
in state, also a setter has been added. Only the watcher
is missing.

R=aram, niemeyer
CC=
https://codereview.appspot.com/6495068

458. By Roger Peppe on 2012-09-04

environs/jujutest: test that agent version is set in state.

This is all that remains of
https://code.launchpad.net/~rogpeppe/juju-core/039-init-agent-version/+merge/122019

R=niemeyer
CC=
https://codereview.appspot.com/6493066

457. By Gustavo Niemeyer on 2012-09-04

mstate/presence: foundation for presence handling

R=rog, TheMue
CC=
https://codereview.appspot.com/6495079

456. By Roger Peppe on 2012-09-03

juju: always connect to State.

All uses of juju.Conn other than Bootstrap and Destroy require a state
connection, so make State an exported field of Conn and connect to it
when creating the Conn.

The few places that call Bootstrap can easily call Environ.Bootstrap
instead.

Also add environs.NewFromName to make it easier to open an
environment, rename juju.NewConn to juju.NewConnFromName, and add
juju.NewConnFromEnviron to join the dots.

R=TheMue, niemeyer
CC=
https://codereview.appspot.com/6488077

455. By Roger Peppe on 2012-08-31

worker: new package to factor out some common code from workers

Also simplify workers a little.

R=niemeyer
CC=
https://codereview.appspot.com/6501072