Modify SceneManeger to use a DoubleDictionary and work without locks. Changes to the scenes dictionary are exceedingly rare and using atomic operations makes the chance of collisions nearly nil in any case.
Modify SceneManeger to use a DoubleDictionary and work without locks.
Changes to the scenes dictionary are exceedingly rare and using atomic
operations makes the chance of collisions nearly nil in any case.

TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,TomDataworks/opensim,TomDataworks/opensim,RavenB/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,RavenB/opensim,TomDataworks/opensim,RavenB/opensim,RavenB/opensim,RavenB/opensim,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,RavenB/opensim,RavenB/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC