Pull Request Lamogui

Hello Zardoz 
Here are the change between my and your versions and my argument to conserve/removes somes things

Major Changes :
______________

#Remove Boost. 
============
pro : 
 - Big dependancy
 - There are no windows packages (I never found them)
 - I never compilated it
 - I never used it
 - Not easy for people who just want compile to see if working
 - We already use the c++11, i know: the threads are not well implemented well but there is a way to use sfml 

against : 
 - Your benchmark code is no more compatible

proposal : A DCPU Manager which manage dcpu calculation on 2 or 4 threads with libstd or sfml

#Event Main loop on main thread (main function) 
===========================
pro:
 - else the code is no compatible with OSX and maybe win32

#Add need_render boolean on monitor
===========================
pro : 
 - less calculation
 - can be used with graphic engine basicly if it doesn't want render

against : 
 - render only the first frame
 
Minor change not very important
___________________________

 
#return Sf::Texture& instead of sf::Image*
===========================
pro :
 - avoid useless object between uint8_t* and sf::Texture and severals function calls
 - better speed optimisation (sfml doesn't have inline functions for sfImage and sf texture)
 - more compatible if SFML is removed

against :
- monitor must allocate there uint8_t buffers like i do for the lem 

#More Emulator looks like...
====================
 made a very basic "posix looks like program" with options (example --debug or --monitor=)
 so we can add a benchmark option maybe...

#add premake4
============
pro : 
 - easy and light
 - no need installation premake4 is a single executable file included in the repo
 - one single script
against : 
 - new and not mostly used yet
 - i don't know if it works with linux and mac...
 - no force c++11 option yet