W5100 代码库，增加TCP服务器模式以及客户端模式API-W5100 Library,Incoperate both TCP server mode and client api support

本代码实现了TMS320C6678通过SOCKET编程建立一个服务器，电脑作为CLIENT端发送图片给TMS320C6678,6678对图片进行sobel滤波-The code to achieve the establishment of a TMS320C6678 server SOCKET programming, computer image as a CLIENT sends to TMS320C6678,6678 the picture sobel filter