Updated wrappers

include/osgDB/ReentrantMutex

@@ -67,13 +67,8 @@ class OSGDB_EXPORT ReadWriteMutex
         ReadWriteMutex(const ReadWriteMutex&) {}
         ReadWriteMutex& operator = (const ReadWriteMutex&) { return *(this); }
         
-#if 1        
         ReentrantMutex  _readWriteMutex;        
         ReentrantMutex  _readCountMutex;
-#else
-        OpenThreads::Mutex  _readWriteMutex;        
-        OpenThreads::Mutex  _readCountMutex;
-#endif
         unsigned int    _readCount;
         
 };

include/osgSim/ElevationSlice

@@ -74,10 +74,6 @@ class OSGSIM_EXPORT ElevationSlice
 
         /** Get the ReadCallback that does the reading of external PagedLOD models, and caching of loaded subgraphs.*/
         DatabaseCacheReadCallback* getDatabaseCacheReadCallback() { return _dcrc.get(); }
-        
-        /** Get the IntersectionVistor that does the intersection traversal over the scene.
-          * Note, if you want to customized the traversal then you can use the IntersectionVisitor's method to alter its behavior. */
-        osgUtil::IntersectionVisitor& getIntersectionVisitor() { return _intersectionVisitor; }
 
     protected :
     

include/osgSim/HeightAboveTerrain

@@ -79,10 +79,6 @@ class OSGSIM_EXPORT HeightAboveTerrain
         /** Get the ReadCallback that does the reading of external PagedLOD models, and caching of loaded subgraphs.*/
         DatabaseCacheReadCallback* getDatabaseCacheReadCallback() { return _dcrc.get(); }
         
-        /** Get the IntersectionVistor that does the intersection traversal over the scene.
-          * Note, if you want to customized the traversal then you can use the IntersectionVisitor's method to alter its behavior. */
-        osgUtil::IntersectionVisitor& getIntersectionVisitor() { return _intersectionVisitor; }
-
     protected :
     
         struct HAT

include/osgSim/LineOfSight

@@ -96,10 +96,6 @@ class OSGSIM_EXPORT LineOfSight
         /** Get the ReadCallback that does the reading of external PagedLOD models, and caching of loaded subgraphs.*/
         DatabaseCacheReadCallback* getDatabaseCacheReadCallback() { return _dcrc.get(); }
         
-        /** Get the IntersectionVistor that does the intersection traversal over the scene.
-          * Note, if you want to customized the traversal then you can use the IntersectionVisitor's method to alter its behavior. */
-        osgUtil::IntersectionVisitor& getIntersectionVisitor() { return _intersectionVisitor; }
-
     protected :
     
         struct LOS