Show number of connections each bot has established in "show bots" command.
Merge branch 'master' of ssh://opensimulator.org/var/git/opensim
Create a separate pCampbot "disconnect" console command which disconnects connected bots.

"quit" console command now requires bots to be separate disconnected first before quitting.
This is to prepare the way for disconnecting/reconnecting different numbers of bots in a pCampbot session.
And hopefully resolves bug where console appears not to be reset if Environment.Exit(0) is called on a different thread
Make it possible to disconnected a specified number of bots via the pCampbot console command "disconnect [<n>]"

Bots disconnected are ascending from last in numeric order.
Temporarily no way to reconnect bots.
refactor: restructure pCampbot multi-bot connection code.
refactor: start bot connection thread within BotManager rather than externally