Improved error handling (introduced debugsession commandline argument). Startup/shutdown now more verbose. SSE checks if project was compiled with SSE(2)... not sure if windows would reach it if hardware lacked support, but linux/mac may (from V2). Fixed Mac crashes in deferred.

indra/newview/llspatialpartition.cpp

@@ -286,6 +286,10 @@ LLSpatialGroup::~LLSpatialGroup()
 		llerrs << "Illegal deletion of LLSpatialGroup!" << llendl;
 	}*/
 
+	if (gDebugGL)
+	{
+		gPipeline.checkReferences(this);
+	}
 	if (isState(DEAD))
 	{
 		sZombieGroups--;
@@ -3314,6 +3318,11 @@ LLDrawInfo::~LLDrawInfo()
 	{
 		mFace->setDrawInfo(NULL);
 	}
+
+	if (gDebugGL)
+	{
+		gPipeline.checkReferences(this);
+	}
 }
 
 LLVertexBuffer* LLGeometryManager::createVertexBuffer(U32 type_mask, U32 usage)