Added missing TextureEnvMode.Replace token. Fixes issue [#2791]: "TextureEnvMode.Replace missing".

Source/Bind/Specifications/GL2/gloverrides.xml

@@ -2617,6 +2617,7 @@
     </enum>
     <enum name="TextureEnvMode">
       <token name="COMBINE" value="0x8570" />
+      <token name="REPLACE" value="0x1E01" />
     </enum>
     <enum name="TextureEnvModeCombine">
       <use enum="StencilOp" token="REPLACE" />

Source/OpenTK/Graphics/OpenGL/GLEnums.cs

@@ -44572,6 +44572,10 @@ namespace OpenTK.Graphics.OpenGL
         /// </summary>
         Blend = ((int)0x0BE2)        ,
         /// <summary>
+        /// Original was GL_REPLACE = 0x1E01
+        /// </summary>
+        Replace = ((int)0x1E01)        ,
+        /// <summary>
         /// Original was GL_MODULATE = 0x2100
         /// </summary>
         Modulate = ((int)0x2100)        ,