loongson/pypi: links for js-jquery-ui-multiselect2

loongson/mirror js.jquery_ui_multiselect2-2.0-rc-2.tar.gz
loongson/mirror js.jquery_ui_multiselect2-2.0.tar.gz
loongson/mirror js.jquery_ui_multiselect2-2.0-rc-1.tar.gz
loongson/mirror js.jquery_ui_multiselect2-2.0-rc.tar.gz