shared_ptr -> std::shared_ptr

This is one of the first commits in a plan to remove all `using namespace std;` lines in the entire codebase as it is considered anti-pattern today.

Minecraft.Client/CritParticle.h

@@ -7,17 +7,17 @@ class Entity;
 class CritParticle : public Particle
 {
 private:
-	shared_ptr<Entity> entity;
+	std::shared_ptr<Entity> entity;
 	int life;
 	int lifeTime;
 	ePARTICLE_TYPE particleName;
 
-	void _init(Level *level, shared_ptr<Entity> entity, ePARTICLE_TYPE type);
+	void _init(Level *level, std::shared_ptr<Entity> entity, ePARTICLE_TYPE type);
 
 public:
 	virtual eINSTANCEOF GetType() { return eType_CRITPARTICLE; }
-	CritParticle(Level *level, shared_ptr<Entity> entity);
-	CritParticle(Level *level, shared_ptr<Entity> entity, ePARTICLE_TYPE type);
+	CritParticle(Level *level, std::shared_ptr<Entity> entity);
+	CritParticle(Level *level, std::shared_ptr<Entity> entity, ePARTICLE_TYPE type);
 	void CritParticlePostConstructor(void);
 	void render(Tesselator *t, float a, float xa, float ya, float za, float xa2, float za2);
 	void tick();