renamed ominous "Smooth" texture to "none", removed reference in docs to Smooth and made it 512x512

In OC, actually every material has its predefined set of textures, so the default texturing of >=CR is obsolete. The "Smooth" texture is a relic of that which is currently only used because of the "Vehicle" material.

docs/de.po

@@ -8379,8 +8379,8 @@ msgid "If <code>true</code>, the material will be drawn as 'underground'."
 msgstr "Wenn <code>true</code>, wird das Material unterirdisch gezeichnet."
 
 #: sdk/script/fn/DrawMaterialQuad.xml:65(desc)
-msgid "Draws a four-cornered polygon of the specified material and texture into the landscape. If no texture is specified, Smooth is assumed."
-msgstr "Zeichnet ein viereckiges Polygon im angegebenen Material mit der angegebenen Textur. Wenn keine Textur angegeben ist, wird Smooth angenommen."
+msgid "Draws a four-cornered polygon of the specified material and texture into the landscape."
+msgstr "Zeichnet ein viereckiges Polygon im angegebenen Material mit der angegebenen Textur."
 
 #: sdk/script/fn/DrawMaterialQuad.xml:66(remark)
 msgid "The corners of the polygon should be specified in clockwise order and polygon boundaries should not intersect. For more complex or concave shapes you make multiple calls to this function."

docs/sdk/script/fn/DrawMaterialQuad.xml

@@ -62,7 +62,7 @@
         </param>
       </params>
     </syntax>
-    <desc>Draws a four-cornered polygon of the specified material and texture into the landscape. If no texture is specified, Smooth is assumed.</desc>
+    <desc>Draws a four-cornered polygon of the specified material and texture into the landscape.</desc>
     <remark>The corners of the polygon should be specified in clockwise order and polygon boundaries should not intersect. For more complex or concave shapes you make multiple calls to this function.</remark>
     <examples>
       <example>

src/game/landscape/C4Material.cpp

@@ -525,7 +525,7 @@ bool C4MaterialMap::CrossMapMaterials() // Called after load
 			szTextureOverlay = TextureMap.GetEntry(iTexMapIx)->GetTextureName();
 		// default to smooth
 		if (!szTextureOverlay)
-			szTextureOverlay = "Smooth";
+			szTextureOverlay = "none";
 		// search/create entry in texmap
 		Map[cnt].DefaultMatTex = ::TextureMap.GetIndex(Map[cnt].Name, szTextureOverlay, true,
 		                         FormatString("DefaultMatTex of mat %s", Map[cnt].Name).getData());