Added missing XML comment to AL class.

Made AL.Lib internal.

Documentation/Changelog.txt

@@ -5,10 +5,17 @@
 -------------------------
 + OpenTK
     + Enabled documentation generation in debug builds.
+    + Added several missing XML comments to OpenTK.Input, OpenTK.Audio, OpenTK.Math and other namespaces.
+    + Audio
+		+ AL.Lib is now internal, not public.
     + Compute
         + Bitfields are now mapped to 'long' instead of 'int'.
     + GLControl
         + Removed unused code.
+    + Input
+		+ Added Mouse and Keyboard stubs for the new input API.
+		+ Added common alternative names to OpenTK.Input.Key (e.g. LControl, RControl, ...)
+		+ Removed None and MaxKeys tokens from OpenTK.Input.Key. Adde Unknown token.
     + Math
         + Namespace OpenTK.Math no longer exists. Math functions are now placed directly inside the OpenTK namespace.
         + Matrix4.Frustum was obsoleted in favor of Matrix4.CreatePerspectiveOffCenter.

Source/OpenTK/Audio/OpenAL/AL/AL.cs

@@ -64,13 +64,15 @@ typedef void ALvoid;
 
 namespace OpenTK.Audio
 {
+    /// <summary>
+    /// Provides access to the OpenAL flat API.
+    /// </summary>
     public static partial class AL
     {
-
         #region Constants
 
-        public const string Lib = "openal32.dll";
+        internal const string Lib = "openal32.dll";
-        private const CallingConvention Style = CallingConvention.Cdecl;
+        const CallingConvention Style = CallingConvention.Cdecl;
 
         #endregion Constants