Change 'mclibref' to 'mobilec'
Change 'mclibref' to user-guide format
Move API to appendix A
Each API in seperate file: No subsubsections
Mv examples to regular chapter

* Add 'messagebox' example: Have an example where we use 'messagebox' instead of printf() in an agent
* - Play with callbacks during agent initialization
* Document Windows DLL build
* Add list of variables to save upon migration.
* Check 'See Also' section of MC_GetAgentReturnData
* Check agent return message in agent message formats

A   -Add doc for MC_SetThread*
B   -Add MC_SetDefaultAgentStatus
C (DONE)  -All Macros start with MC_
D (DONE)  -Remove MC_SetThreads, change MC_SetThread[on|off] to match functionality.
E (DONE)  -Merge MC_HandleInit() and MC_Start() into MC_Initialize() with a single
     argument. (port number)
F (DONE)  -Add MC_SendACLMessageFile() for sending a file, MC_SendACLMessage() for 
     sending a character string
G (DONE)  -Change return value of MC_GetAgentExecEngine to ChInterp_t, instead of 
     ChInterp_t*
H (DONE)  -Change AI_THREAD to MC_THREAD_AI, etc.
I (DONE)  -Change LP_MC_HANDLE to MC_Agency_t, LP_MOBILE_AGENT to MC_Agent_t, etc.
J   -Update Docs
K (DONE)   -Add MC_End(agency)
L (DONE)  -Merge five installed header files into a single header file, mobilec.h
M (DONE)  -Play with Agent Condition Variables and Agent Suspension
