make include paths absolute within src

src/game/boe.menu.hpp

@@ -6,12 +6,12 @@
 // NOTE: this also includes SFML for us
 #include <TGUI/TGUI.hpp>
 #include <vector>
-#include "universe.hpp"
+#include "universe/universe.hpp"
 #include "boe.consts.hpp"
 #include "spell.hpp"
 #include "skills_traits.hpp"
-#include "event_listener.hpp"
-#include "drawable.hpp"
+#include "tools/event_listener.hpp"
+#include "tools/drawable.hpp"
 
 class OpenBoEMenu : public iEventListener, public iDrawable {
 public:

src/game/boe.menus.linux.cpp

@@ -9,8 +9,8 @@
 #include "boe.menu.hpp"
 #include "boe.consts.hpp"
 
-#include "event_listener.hpp"
-#include "drawable_manager.hpp"
+#include "tools/event_listener.hpp"
+#include "tools/drawable_manager.hpp"
 
 extern sf::RenderWindow mainPtr;
 extern cUniverse univ;