SWORD25: More compilation fixes

Now almost everything compiles fine. Several files were tricked
and there are references to tinyxml.h and of course fmod and agg.

OpenGL gfx renderer removed from the project, we need to create
our own from the scratch.

svn-id: r53224

engines/sword25/gfx/renderobjectmanager.cpp

@@ -59,7 +59,7 @@ namespace Sword25 {
 BS_RenderObjectManager::BS_RenderObjectManager(int Width, int Height, int FramebufferCount) :
 	m_FrameStarted(false) {
 	// Wurzel des BS_RenderObject-Baumes erzeugen.
-	m_RootPtr = new BS_RootRenderObject(this, Width, Height);
+	m_RootPtr = (new BS_RootRenderObject(this, Width, Height))->GetHandle();
 }
 
 // -----------------------------------------------------------------------------