Speed up the image reading for large-scale image classification.

[qingqing01]

1. Using a library with OpenCV to process image including data argumentations.
2. This library also use multi-thread to speed up.
3. Then loads this library in the DataProvider.

[reyoung]

In Paddle repository, we just use Python to speed up Image reading. The experimental optimization of Image reading and processing will be host in a separate repository currently. Please tracking that repository for the progress of this issue.