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/PaintingRenderer.h

@@ -11,9 +11,9 @@ private:
 
 public:
 	PaintingRenderer();		// 4J -added
-	virtual void render(shared_ptr<Entity> _painting, double x, double y, double z, float rot, float a);
+	virtual void render(std::shared_ptr<Entity> _painting, double x, double y, double z, float rot, float a);
 
 private:
-	void renderPainting(shared_ptr<Painting> painting, int w, int h, int uo, int vo);
-    void setBrightness(shared_ptr<Painting> painting, float ss, float ya);
+	void renderPainting(std::shared_ptr<Painting> painting, int w, int h, int uo, int vo);
+    void setBrightness(std::shared_ptr<Painting> painting, float ss, float ya);
 };