loongson/pypi: links for py-expression-lib-opencv

loongson/mirror py-expression-lib-opencv-0.0.4.tar.gz
loongson/mirror py-expression-lib-opencv-0.0.3.tar.gz
loongson/mirror py-expression-lib-opencv-0.0.2.tar.gz
loongson/mirror py-expression-lib-opencv-0.0.1.tar.gz