message: Realized I can use ifdef for glm headers
diff: #include "MapClient.h"
  #include "Entity.h"
  #include "GameData/CoHMath.h"
  -//#include <glm/glm.hpp> //include for DEBUG_INPUT
  -//#include <glm/ext.hpp> //include for DEBUG_INPUT
  +#ifdef DEBUG_INPUT
  +// currently only needed for DEBUG_INPUT
  +#include <glm/glm.hpp>
  +#include <glm/ext.hpp>
  +#endif
  namespace {
  constexpr float F_PI = float(M_PI); // to prevent double <-> float conversion warnings
  