max-agent-groups support

Robust now tells viewers what the maximum number of groups is. Viewers show this limit to the users, and enforce it.

The default is 42, which is what viewers had assumed was the maximum number before this update.

Signed-off-by: Oren Hurvitz <orenh@kitely.com>

bin/Robust.ini.example

@@ -507,6 +507,11 @@
     OfflineIMService = "OpenSim.Addons.OfflineIM.dll:OfflineIMService"
 
 
+[Groups]
+    ;; Sets the maximum number of groups an agent may join
+    ; MaxAgentGroups = 42
+
+
 [GridInfoService]
     ; These settings are used to return information on a get_grid_info call.
     ; Client launcher scripts and third-party clients make use of this to