Patches from Norm Vine to get clouds working (and add some debugging

information).

simgear/scene/sky/clouds3d/SkyArchive.cpp

@@ -964,6 +964,9 @@ SKYRESULT SkyArchive::Load(const char* pFileName)
   
   FILE* pSrcFile = NULL;
   
+  char buf[512];
+  sprintf(buf,"SkyArchive::Load(%s)",pFileName);
+  SkyTrace(buf);
   if (NULL == (pSrcFile = fopen(pFileName, "rb"))) // file opened successfully   
   {
     SkyTrace("Error: SkyArchive::Load(): failed to open file for reading.");

simgear/scene/sky/clouds3d/SkySceneLoader.cpp

@@ -222,11 +222,12 @@ void SkySceneLoader::Draw()
   //_ssgCurrentContext->cull(r) ;
   //_ssgDrawDList () ;
 
-	SceneManager::InstancePtr()->Display(*pCam);
+  SceneManager::InstancePtr()->Update(*pCam);
+  SceneManager::InstancePtr()->Display(*pCam);
 	
-	//pLight->Display(); // draw the light position to  debug with sun position
+  //pLight->Display(); // draw the light position to  debug with sun position
 
   glMatrixMode ( GL_MODELVIEW ) ;
   glLoadIdentity () ;
 
-}
+}