WARNING: BREAKING CHANGES FOR REGION MODULE DEVELOPMENT.

This cleans up Opensim's use of mono addins. In particular, the extension points /OpenSim/RegionModules and /OpenSim/WindModule moved from OpenSim.exe to OpenSim.Region.Framework.dll. From here on, developers of region modules should declare their dlls to be dependent on OpenSim.Region.Framework, starting with version 0.8.1
Additional changes:
- Addins version uniformly updated to 0.8.1. These numbers should be compatible with the release numbers or else it becomes very confusing.
- Mono addins directives moved from files addins.xml to embedded directives in the class and assembly declarations, to make it all consistent

OpenSim/ApplicationPlugins/RegionModulesController/Properties/AssemblyInfo.cs

@@ -1,6 +1,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using Mono.Addins;
 
 // General Information about an assembly is controlled through the following 
 // set of attributes. Change these attribute values to modify the information
@@ -31,3 +32,5 @@ using System.Runtime.InteropServices;
 //
 [assembly: AssemblyVersion("0.8.1.*")]
 
+[assembly: Addin("OpenSim.ApplicationPlugins.RegionModulesController", "0.1")]
+[assembly: AddinDependency("OpenSim", "0.8.1")]

OpenSim/ApplicationPlugins/RegionModulesController/RegionModulesControllerPlugin.cs

@@ -38,6 +38,7 @@ using OpenSim.Region.Framework.Scenes;
 
 namespace OpenSim.ApplicationPlugins.RegionModulesController
 {
+    [Extension(Path = "/OpenSim/Startup", Id = "LoadRegions", NodeName = "Plugin")]
     public class RegionModulesControllerPlugin : IRegionModulesController,
             IApplicationPlugin
     {

OpenSim/ApplicationPlugins/RegionModulesController/Resources/RegionModulesControllerPlugin.addin.xml

@@ -1,13 +0,0 @@
-<Addin id="OpenSim.ApplicationPlugins.RegionModulesController" version="0.1">
-    <Runtime>
-        <Import assembly="OpenSim.ApplicationPlugins.RegionModulesController.dll"/>
-    </Runtime>
-
-    <Dependencies>
-        <Addin id="OpenSim" version="0.8.1" />
-    </Dependencies>
-
-    <Extension path = "/OpenSim/Startup">
-        <Plugin id="RegionModulesController" type="OpenSim.ApplicationPlugins.RegionModulesController.RegionModulesControllerPlugin" />
-    </Extension>
-</Addin>