Updated to MonoGame 3.6 + Directory refactor

- Barotrauma's projects are in the Barotrauma directory
- All libraries are in the Libraries directory
- MonoGame is now managed by NuGet, rather than referenced from the installed files (TODO: consider using PCL for easier cross-platform development?)
- NuGet libraries are not included in the repo, as getting the latest versions automatically should be preferred
- Removed Content/effects.mgfx as it didn't seem to be used anywhere
- Removed some references to Subsurface directory
- Renamed Launcher2 to Launcher

Libraries/Lidgren.Network/NetDeliveryMethod.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Lidgren.Network
+{
+	/// <summary>
+	/// How the library deals with resends and handling of late messages
+	/// </summary>
+	public enum NetDeliveryMethod : byte
+	{
+		//
+		// Actually a publicly visible subset of NetMessageType
+		//
+
+		/// <summary>
+		/// Indicates an error
+		/// </summary>
+		Unknown = 0,
+
+		/// <summary>
+		/// Unreliable, unordered delivery
+		/// </summary>
+		Unreliable = 1,
+
+		/// <summary>
+		/// Unreliable delivery, but automatically dropping late messages
+		/// </summary>
+		UnreliableSequenced = 2,
+
+		/// <summary>
+		/// Reliable delivery, but unordered
+		/// </summary>
+		ReliableUnordered = 34,
+
+		/// <summary>
+		/// Reliable delivery, except for late messages which are dropped
+		/// </summary>
+		ReliableSequenced = 35,
+
+		/// <summary>
+		/// Reliable, ordered delivery
+		/// </summary>
+		ReliableOrdered = 67,
+	}
+}