ui 0.10 增加多线程读入pcd文件处理，提示用户等待加载，qvtk部分代码重构，ui修改

Classes/MyThread.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <qthread.h>
+#include <pcl/point_types.h>
+#include <pcl/io/vtk_lib_io.h>
+using namespace std;
+using namespace pcl;
+
+class MyThread :
+	public QThread
+{
+public:
+	MyThread();
+	~MyThread();
+	void setPcd(QString str);
+	PointCloud<PointXYZRGB> getCloud();
+
+private:
+	string pcd;
+	PointCloud<PointXYZRGB> cloud;
+
+protected:
+	void run();
+};
+