重构代码

增加CCUtils单元，将保存客户端连接查询句柄的简易哈希结构放到这个公共单元中
Merge remote-tracking branch 'origin/master'

Conflicts:
	IocpClientTest/IocpClientTest.sdf
	IocpClientTest/IocpClientTest.v12.suo
	IocpClientTest/IocpClientTest/IocpClientTest.vcxproj
	IocpServerTest/IocpServerTest.sdf
	IocpServerTest/IocpServerTest.v12.suo
	IocpServerTest/IocpServerTest/IocpServerTest.vcxproj