Some searx requirements

[contact . ng0]

These come from a branch so old I just had to start from from scratch again.
While I was at it, I saw some of them were being added to a new python branch, 
but I can't filter that out and rebase against a moving-target branch.

I'm trying to get searx to work again, patches should work on their own, though 
I need a comment on gunicorn and the one which adds pysocks as an input to some 
package. I never packaged a python based server (? gunicorn is a server right?) 
and lately I haven't been messing around with this branch so I don't know about 
the pysocks thing, except that searx needs this for the tor capability.