Created FileSystem and Sys static classes, moved things from utils.hpp and string.hpp.
Changed SDL2 files name, to *sdl2.*pp.
Modified a little bit the Makefile.
Removed all the references to SDL 1.3, since it doesn't exists anymore.
Added eevsnprintf, removed a lot of "#ifdef EE_COMPILER_MSVC".
Still i couldn't make a lot of changes planned, so it's WIP, code probably broken in other platforms besides Linux.
This commit is to mark the API break, since here i'll make changes that will break any application that is using eepp.
Probably i'm the only one using eepp, so, it's not a big deal.
Added support to switcheable backends without recompiling.
Added some helpers to load WindowSettings and ContextSettings from an ini file.
Moved default Demo to a Demo namespace.
Optimized cGameObjectsShapeEx lights.
Changed some functions names to CamelCase.
cIniFile avoids to re-read files.
Windows 8 and Windows Server 2012 now are correctly detected.
Now header files are inside the include folder, and the source files inside src.
Moved the projects files inside a projects folder.
Precompiled static libs will be inside libs folder.
