vs2012只设置一次opencv库的方法

存下属性文件，再使用时直接调用。

另外外部附加文件如下：

opencv_calib3d246d.lib
opencv_contrib246d.lib
opencv_core246d.lib
opencv_features2d246d.lib
opencv_flann246d.lib
opencv_gpu246d.lib
opencv_highgui246d.lib
opencv_imgproc246d.lib
opencv_legacy246d.lib
opencv_ml246d.lib
opencv_nonfree246d.lib
opencv_objdetect246d.lib
opencv_ocl246d.lib
opencv_photo246d.lib
opencv_stitching246d.lib
opencv_superres246d.lib
opencv_ts246d.lib
opencv_video246d.lib
opencv_videostab246d.lib
libpngd.lib
libtiffd.lib
zlibd.lib
IlmImfd.lib
libjasperd.lib
libjpegd.lib
comctl32.lib
gdi32.lib
vfw32.lib