[dev] [libsl][bug] Call FcFini on cleanup for projects calling FcIni

[Anskrevy]

Any program using libsl, or calling FcIni (directly or indirectly), that 
does not call FcFini results in a small memory leak. dwm and dmenu are 
effected by this. Appending a call to FcFini in the cleanup function 
will fix this.

[dev] dvtm copy mode is broken on OpenBSD

[unix]

My issue is very similar to https://github.com/martanne/dvtm/issues/111. 
My default editor (vis) is envoked when I do Mod+e but when I try to 
paste with Mod+p nothing happens. Tested on xterm and st, with OpenBSD 
vi and vis editors, in cwm and wmii window managers. I tried invoking 
the terminal manually from another terminal, as is suggested by the 
author of the aforementioned issue, unsuccessfully.