调整winform所有的窗体背景色，更新hslcommunication组件，完成网络通信引擎。

ClientsLibrary/FileSupport/FileItemShow.Designer.cs

@@ -156,6 +156,7 @@
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 17F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.BackColor = System.Drawing.Color.AliceBlue;
             this.Controls.Add(this.label_download_times);
             this.Controls.Add(this.label_upload_name);
             this.Controls.Add(this.progressBar1);