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/TheEndPortalRenderer.h

@@ -5,7 +5,7 @@
 class TheEndPortalRenderer : public TileEntityRenderer
 {
 public:
-	virtual void render(shared_ptr<TileEntity> _table, double x, double y, double z, float a, bool setColor, float alpha=1.0f, bool useCompiled = true);
+	virtual void render(std::shared_ptr<TileEntity> _table, double x, double y, double z, float a, bool setColor, float alpha=1.0f, bool useCompiled = true);
 
 	FloatBuffer *lb;