- adding osGetAgents() which returns a list of all avatars in the region

in which the script is running.

 -  found a bag of space characters under my desk, thought i'd donate them
    to the JSON OSSL function (aka clean up)

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

@@ -175,6 +175,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
             return m_OSSL_Functions.osGetAgentIP(agent);
         }
 
+        public LSL_List osGetAgents()
+        {
+            return m_OSSL_Functions.osGetAgents();
+        }
+
         // Animation Functions
 
         public void osAvatarPlayAnimation(string avatar, string animation)