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

Extras/Serialize/BulletXmlWorldImporter/string_split.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.
+*/
+
+///The string split C code is by Lars Wirzenius
+///See http://stackoverflow.com/questions/2531605/how-to-split-a-string-with-a-delimiter-larger-than-one-single-char
+
+
+#ifndef STRING_SPLIT_H
+#define STRING_SPLIT_H
+
+#include <cstring>
+#include "LinearMath/btAlignedObjectArray.h"
+
+#include <string>
+
+namespace bullet_utils
+{
+	void split( btAlignedObjectArray<std::string>&pieces, const std::string& vector_str, const std::string& separator);
+};
+
+///The string split C code is by Lars Wirzenius
+///See http://stackoverflow.com/questions/2531605/how-to-split-a-string-with-a-delimiter-larger-than-one-single-char
+
+
+/* Split a string into substrings. Return dynamic array of dynamically
+ allocated substrings, or NULL if there was an error. Caller is
+ expected to free the memory, for example with str_array_free. */
+char**	str_split(const char* input, const char* sep);
+
+/* Free a dynamic array of dynamic strings. */
+void str_array_free(char** array);
+
+/* Return length of a NULL-delimited array of strings. */
+size_t str_array_len(char** array);
+
+#endif //STRING_SPLIT_H
+