Fix hardcoded uses of "/tmp"
Fix hardcoded uses of "/tmp"

Closes #1032

jkonecny12/kakoune,alexherbo2/kakoune,alexherbo2/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,lenormf/kakoune,alexherbo2/kakoune,ekie/kakoune,lenormf/kakoune,danr/kakoune,jjthrash/kakoune,casimir/kakoune,mawww/kakoune,jjthrash/kakoune,lenormf/kakoune,mawww/kakoune,lenormf/kakoune,jjthrash/kakoune,casimir/kakoune,occivink/kakoune,mawww/kakoune,ekie/kakoune,ekie/kakoune,occivink/kakoune,Somasis/kakoune,jjthrash/kakoune,occivink/kakoune,danr/kakoune,Somasis/kakoune,Somasis/kakoune,mawww/kakoune,danr/kakoune,occivink/kakoune,jkonecny12/kakoune,casimir/kakoune,casimir/kakoune,danr/kakoune,jkonecny12/kakoune,Somasis/kakoune,ekie/kakoune