添加设定文件config.hpp
修正config.hpp的一个bug

加入用于内存池基类MemPoolBase(memory/MemPoolBase.hpp)与其子类MemPool(memory/MemPool.hpp)
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Fix a bug in config.hpp .

Add memory pool base class MemPoolBase(memory/MemPoolBase.hpp) and is't 
child class MemPool(memory/MemPool.hpp).

Signed-off-by: brotherroot <brotherroot1993@gmail.com>
	modified:   .gitignore
	modified:   include/config.hpp
	modified:   include/math/Dual.hpp
	new file:   include/math/Point2D.hpp
	modified:   include/math/Vector2D.hpp
	modified:   include/memory/MemPool.hpp
	new file:   include/structure/DynArrPOD.hpp
	modified:   src/test/test_Dual.cpp
	modified:   src/test/test_Vector2D.cpp
调整了Vector2D和Point2D的继承结构，添加了共同的基类XYPair

Signed-off-by: brotherroot <brotherroot1993@gmail.com>