Function setcwd

src/core/os.cpp:238–247

	}

	void setcwd(const char *cwd)
	{
#if CROWN_PLATFORM_WINDOWS
		BOOL ret = SetCurrentDirectory(cwd);
		CE_UNUSED(ret);
#else
		int ret = chdir(cwd);
		CE_UNUSED(ret);
#endif
	}

	const char *getenv(const char *name)
	{