Add osRequestURL and osRequestSecureURL with an options list.

Only currently supported option is "allowXss" which will send the needed
Access-control-allow-origin: * header to allow xss scripting against
the LSL http server.

OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs

@@ -1054,5 +1054,15 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         {
             return m_OSSL_Functions.osRegexIsMatch(input, pattern);
         }
+
+        public LSL_String osRequestURL(LSL_List options)
+        {
+            return m_OSSL_Functions.osRequestURL(options);
+        }
+
+        public LSL_String osRequestSecureURL(LSL_List options)
+        {
+            return m_OSSL_Functions.osRequestSecureURL(options);
+        }
     }
 }