Add the support of search engines by images

[Zefling]

Currently, these sites are not considered as search engines, because the key is an image and not a word. Is it possible to add it ?

Search by images :
- http://r.search.yahoo.com/_ylt=A2KI9kJL77hTARIA28ruPwx.;_ylu=X3oDMTBtdXBkbHJyBHNlYwNmcC1hdHRyaWIEc2xrA3J1cmw-/RV=2/RE=1404657611/RO=11/RU=http://ikilote.net/en/Image/Galeries/News/Anime/74/Esper_Mami_-_ep005_122.jpg.html/RK=0/RS=0ynbjmk3ENbLxR2tgNyhcra0kIo-
- http://www.bing.com/images/searchbyimage?FORM=IRSBIQ&cbir=sbi&sbifsz=1500+x+844+%C2%B7+305+kB+%C2%B7+jpeg&sbifnm=0b88cac8a786c91738f7ddd3cb3d70cf3ac75722.jpg&thw=1500&thh=844&mkt=zh-CN
- http://search.azby.fmworld.net/imagesearch/search?cflg=%E6%A4%9C%E7%B4%A2&select=2&chartype=&q=%E3%83%AD%E3%83%9E%E3%83%B3%E3%83%81%E3%82%AB%E3%82%AF%E3%83%AD%E3%83%83%E3%82%AF&tmpl=img_frame_azby&imgurl=http://ikilote.net/Galeries/News/Anime/AS/%E3%83%AD%E3%83%9E%E3%83%B3%E3%83%81%E3%82%AB_%E3%82%AF%E3%83%AD%E3%83%83%E3%82%AF_2.jpg&imgrefurl=http://ikilote.net/ja/Image/Galeries/News/Anime/AS/%E3%83%AD%E3%83%9E%E3%83%B3%E3%83%81%E3%82%AB_%E3%82%AF%E3%83%AD%E3%83%83%E3%82%AF_1.jpg.html&h=960&w=1280&sz=396.9kB&tbnid=http://msp.c.yimg.jp/image?q=tbn:ANd9GcQjtgf2Icsznh_0ahsqAXyK6xug3EuVwc8eC1TWDM_Bs5ZSWPCGwS2om3qX:http://ikilote.net/Galeries/News/Anime/AS/%25E3%2583%25AD%25E3%2583%259E%25E3%2583%25B3%25E3%2583%2581%25E3%2582%25AB_%25E3%2582%25AF%25E3%2583%25AD%25E3%2583%2583%25E3%2582%25AF_2.jpg&tbnh=113&tbnw=150&start=3&prev=/imagesearch/search?cflg=%E6%A4%9C%E7%B4%A2&select=2&chartype=&q=%E3%83%AD%E3%83%9E%E3%83%B3%E3%83%81%E3%82%AB%E3%82%AF%E3%83%AD%E3%83%83%E3%82%AF&start=0&img.fmt=all&img.imtype=color&img.filteradult=no&img.type=all&img.dimensions=all
- http://yandex.ru/images/search?p=1&cbir_id=x_Ph_R4oVTknz75USL6SIg&rpt=imageview&uinfo=sw-1920-sh-1080-ww-1920-wh-955-pd-1-wp-16x9_1920x1080
- http://www.tineye.com/search/d4ebf83263da411ec940f8da6171726e61cf4b6e/

[sgiehl]

Note: r.search.yahoo.com is now detected as search engine. See #5910