Thank you kindly, MCortez, for a patch that:

Added is a patch that adds a rough Groups implementation. This patch allows 
the creation, adding and maintaining Groups, Roles and Members. Work has begun 
on a very naive implementation of messaging, and minimal support for notifications 
{no attachments yet}. Proposals are not yet supported, but are on the to-do list.
This implementation is not active by default, and must be configured in 
OpenSim.ini to become active.

1 files changed, 4 insertions, 0 deletions

diff --git a/prebuild.xml b/prebuild.xml
index 72cfb76..7d33fac 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1268,6 +1268,7 @@
       <Reference name="OpenSim.Framework.Servers"/>
       <Reference name="OpenSim.Framework.Statistics"/>
       <Reference name="OpenSim.Region.Physics.Manager"/>
+      <Reference name="Mono.Addins.dll" />
 
       <!-- For scripting in funny languages by default -->
       <Reference name="Microsoft.JScript"/>
@@ -1277,10 +1278,12 @@
       <Reference name="log4net.dll"/>
       <Reference name="DotNetOpenMail.dll"/>
 
+          
       <Files>
         <Match pattern="*.cs" recurse="true">
           <Exclude name="Tests" pattern="Tests" />
         </Match>
+        <Match pattern="*.addin.xml" path="Resources" buildAction="EmbeddedResource" recurse="true"/>
       </Files>
     </Project>
 
@@ -3289,3 +3292,4 @@
 
 
 
+