Make default slurl prefix more opensim-like

While still remaining compatible with declined RLVa inventory offers

OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs

@@ -118,7 +118,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         protected bool m_AllowGodFunctions;
 
         protected double m_timer = Util.GetTimeStamp();
-        protected string m_SlurlPrefix = "http://slurl.com/secondlife";
+        protected string m_SlurlPrefix = "http://slurl.opensim.local";
 
         protected bool m_waitingForScriptAnswer = false;
         protected bool m_automaticLinkPermission = false;

bin/OpenSimDefaults.ini

@@ -1814,10 +1814,12 @@
 
     ; Used in inventory offer messages to show the giving object origin
     ; To make /decline work for RLVa inventory offers, this has to
-    ; start with "http://slurl". Your grid could host a slurl-like
-    ; webmap at given url, for example at http://slurl.yourgrid.com
+    ; start with "http://slurl", however a webpage does not need to
+    ; exist at given location. Your grid may choose to host a slurl.com-like
+    ; webmap if desired, for example at http://slurl.yourgrid.com
     ; The dialog will display it inworld as: SlurlPrefix/regionname/x/y/z/
-    ;SlurlPrefix="http://slurl.com/secondlife"
+    ; In SL the prefix is: http://slurl.com/secondlife
+    ;SlurlPrefix="http://slurl.opensim.local"
 
 [Concierge]
     ; Enable concierge module