Huge engine change, replace all std::shared_ptrs

Create a new shared pointer type stdext::shared_object_ptr and stdext::shared_obj
using boost::intrusive_ptr

Advantages:
 * half memory usage
 * faster and lightweight

Disadvantages:
 * using weak_ptr is not supported anymore
 * compiling seems slower

src/main.cpp

@@ -25,11 +25,6 @@
 #include <framework/luaengine/luainterface.h>
 #include <otclient/otclient.h>
 
-#include <framework/core/binarytree.h>
-#include <otclient/item.h>
-#include <otclient/tile.h>
-#include <boost/any.hpp>
-
 int main(int argc, const char* argv[])
 {
     std::vector<std::string> args(argv, argv + argc);