RemoteDesktop: Create states for unknown tokens.

This allows to recover from reconnects where creation of some tokens
may have taken place before the client was fully connected.

RemoteDesktop: Switch connection direction and simplify client.

Instead of the server connecting back to a listening client, make it
into a more traditional setup with the server listening on a port and
the client connecting to it.

The client can now either connect directly, unencrypted and without the
ability to trigger listening and specifying a command, or through SSH,
as before with the possibilty to run a target application and causing
the creation of the listener.

With the direction change, there's only the need for one, local, port
forward with SSH, which simplifies things.

Adding RemoteDesktop client. It wraps a port forwarding ssh call to provide
security and compression for the session. This allows to keep these layers
separate from the actual protocol. This needs to be run from the command line,
as it will request ssh auth there. After connecting it will export the needed
env variable and run the specified shell (Terminal by default) on the remote
host to make it connect to the local client app.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33418 a95241bf-73f2-0310-859d-f6bbb57e9c96

Adding RemoteDesktop client. It wraps a port forwarding ssh call to provide
security and compression for the session. This allows to keep these layers
separate from the actual protocol. This needs to be run from the command line,
as it will request ssh auth there. After connecting it will export the needed
env variable and run the specified shell (Terminal by default) on the remote
host to make it connect to the local client app.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33418 a95241bf-73f2-0310-859d-f6bbb57e9c96