Remove CP_EXPORT force declaring for Win32

[DDeimos]

Hi!
There is this declaration in chipmunk.h:

#ifdef _WIN32
	#define CP_EXPORT __declspec(dllexport)
#else
	#define CP_EXPORT
#endif

I would prefer to add Chipmunk source files to my project directly. Is it possible if you add some macro options to add Chipmunk sources either directly or as static/dynamic library?