fix terminfo #29

So, hum. Shame on me, who believed that just by including s/screen, then it would include all the required terminfo files...

More seriously, this PR fixes that, at least.

I don't know at all how tmux works with terminfo, which terminfo files should we include for it ? Is it tmux, tmux.linux ?

If someone knows feel free to say here and I shall apply fixes as needed.

I haven't had any issues from tmux so far, but that's a separate issue. Merging.

fix terminfo