Add WIP version of the BLENDER importer. DO NOT USE FOR PRODUCTION YET!

Loads static meshes. Sometimes (it segfaults on the rest). No materials, cameras, fancy stuff. Works with all versions of blender. No compressed blend files yet.

- StreamReader now uses shared_ptr's to manage ownership of the stream.
- Adapt other loaders accordingly.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@717 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/BaseImporter.cpp

@@ -63,25 +63,6 @@ BaseImporter::~BaseImporter()
 	// nothing to do here
 }
 
-template <typename T>
-struct tinyguard
-{
-	tinyguard(T* obj) : obj(obj), mdismiss() {}
-	~tinyguard () throw() {if (!mdismiss) {delete obj;} obj = NULL;} 
-
-	void dismiss() {
-		mdismiss=true;
-	}
-
-	operator T*() {
-		return obj;
-	}
-
-private:
-	T* obj;
-	bool mdismiss;
-};
-
 // ------------------------------------------------------------------------------------------------
 // Imports the given file and returns the imported data.
 aiScene* BaseImporter::ReadFile( const std::string& pFile, IOSystem* pIOHandler)
@@ -90,7 +71,7 @@ aiScene* BaseImporter::ReadFile( const std::string& pFile, IOSystem* pIOHandler)
 	FileSystemFilter filter(pFile,pIOHandler);
 
 	// create a scene object to hold the data
-	tinyguard<aiScene> sc(new aiScene());
+	ScopeGuard<aiScene> sc(new aiScene());
 
 	// dispatch importing
 	try