add the 'extras' and Bullet 2 tests, to make it easier to create a new intermediate release

Extras/Serialize/BulletWorldImporter/btBulletWorldImporter.h

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+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2012 Erwin Coumans  http://bulletphysics.org
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#ifndef BULLET_WORLD_IMPORTER_H
+#define BULLET_WORLD_IMPORTER_H
+
+
+#include "btWorldImporter.h"
+
+
+class btBulletFile;
+
+
+
+
+namespace bParse
+{
+	class btBulletFile;
+	
+};
+
+
+
+///The btBulletWorldImporter is a starting point to import .bullet files.
+///note that not all data is converted yet. You are expected to override or modify this class.
+///See Bullet/Demos/SerializeDemo for a derived class that extract btSoftBody objects too.
+class btBulletWorldImporter : public btWorldImporter
+{
+
+
+public:
+	
+	btBulletWorldImporter(btDynamicsWorld* world=0);
+
+	virtual ~btBulletWorldImporter();
+
+	///if you pass a valid preSwapFilenameOut, it will save a new file with a different endianness 
+	///this pre-swapped file can be loaded without swapping on a target platform of different endianness
+	bool	loadFile(const char* fileName, const char* preSwapFilenameOut=0);
+
+	///the memoryBuffer might be modified (for example if endian swaps are necessary)
+	bool	loadFileFromMemory(char *memoryBuffer, int len);
+
+	bool	loadFileFromMemory(bParse::btBulletFile* file);
+
+	//call make sure bulletFile2 has been parsed, either using btBulletFile::parse or btBulletWorldImporter::loadFileFromMemory
+	virtual	bool	convertAllObjects(bParse::btBulletFile* file);
+
+	
+
+
+};
+
+#endif //BULLET_WORLD_IMPORTER_H
+