Feature client info

[dmweir]

Main changes:

• hello/goodbye/introduce messages from MM on client connect/disconnect
• Support for ConnectV2 with module name and pid
• Expanded module id range (module_id is no longer used as array index)
• Refactor ProcessMessage to use handle methods
• Store a reusable CMessage field in MM class
• Heap allocate MessageManager instance
• Removed TimingMessage
  - Still need to decide if we want to do something here.
  - Is sending the packets themselves is any less efficient than sending the giant TimingMessage?

It should also eliminate any application level pinging code. Now any module that cares about the status of other modules could subscribe to HELLO/GOODBYE. Sending an INTRODUCE signal on module startup will trigger message manager to direct send a HELLO msg for each connected module.