README: document libubsan requirement
README: document libubsan requirement

chunshengster/seastar,wildinto/scylla,wildinto/seastar,tempbottle/seastar,scylladb/scylla-seastar,kangkot/scylla,hongliangzhao/seastar,rentongzhang/scylla,senseb/scylla,dwdm/scylla,slivne/seastar,capturePointer/scylla,scylladb/scylla-seastar,rentongzhang/scylla,eklitzke/scylla,glommer/scylla,scylladb/seastar,wildinto/scylla,dreamsxin/seastar,acbellini/scylla,victorbriz/scylla,stamhe/seastar,shaunstanislaus/scylla,gwicke/scylla,stamhe/seastar,tempbottle/seastar,rentongzhang/scylla,kangkot/scylla,guiquanz/scylla,anzihenry/seastar,sjperkins/seastar,syuu1228/seastar,shyamalschandra/seastar,bowlofstew/scylla,cloudius-systems/seastar,aruanruan/scylla,shyamalschandra/seastar,mixja/seastar,aruanruan/scylla,joerg84/seastar,rluta/scylla,dwdm/seastar,glommer/scylla,tempbottle/seastar,norcimo5/seastar,flashbuckets/seastar,xtao/seastar,mixja/seastar,linearregression/seastar,ducthangho/imdb,capturePointer/scylla,flashbuckets/seastar,stamhe/scylla,cloudius-systems/seastar,raphaelsc/scylla,acbellini/seastar,dwdm/scylla,scylladb/scylla-seastar,jonathanleang/seastar,acbellini/scylla,linearregression/scylla,guiquanz/scylla,avikivity/scylla,sjperkins/seastar,shyamalschandra/seastar,victorbriz/scylla,linearregression/scylla,stamhe/seastar,scylladb/seastar,hongliangzhao/seastar,avikivity/seastar,avikivity/seastar,avikivity/scylla,scylladb/scylla,senseb/scylla,linearregression/scylla,leejir/seastar,justintung/scylla,kjniemi/seastar,dwdm/seastar,kjniemi/scylla,xtao/seastar,asias/scylla,asias/scylla,bowlofstew/scylla,wildinto/scylla,senseb/scylla,koolhazz/seastar,stamhe/scylla,raphaelsc/scylla,glommer/scylla,hongliangzhao/seastar,linearregression/seastar,anzihenry/seastar,sjperkins/seastar,anzihenry/seastar,kangkot/scylla,kjniemi/seastar,flashbuckets/seastar,raphaelsc/seastar,phonkee/scylla,respu/scylla,duarten/scylla,cloudius-systems/seastar,bowlofstew/seastar,tempbottle/scylla,printedheart/seastar,linearregression/seastar,scylladb/scylla,joerg84/seastar,dwdm/scylla,scylladb/seastar,shaunstanislaus/scylla,syuu1228/seastar,scylladb/scylla,jonathanleang/seastar,scylladb/scylla,gwicke/scylla,duarten/scylla,raphaelsc/seastar,kjniemi/scylla,rluta/scylla,wildinto/seastar,slivne/seastar,acbellini/scylla,ducthangho/imdb,guiquanz/scylla,wildinto/seastar,bzero/seastar,raphaelsc/seastar,koolhazz/seastar,norcimo5/seastar,justintung/scylla,ducthangho/imdb,dreamsxin/seastar,norcimo5/seastar,rluta/scylla,aruanruan/scylla,duarten/scylla,victorbriz/scylla,dwdm/seastar,avikivity/scylla,avikivity/seastar,dreamsxin/seastar,bowlofstew/seastar,acbellini/seastar,mixja/seastar,tempbottle/scylla,tempbottle/scylla,justintung/scylla,bzero/seastar,leejir/seastar,kjniemi/seastar,asias/scylla,eklitzke/scylla,chunshengster/seastar,respu/scylla,xtao/seastar,eklitzke/scylla,joerg84/seastar,bowlofstew/scylla,stamhe/scylla,kjniemi/scylla,printedheart/seastar,shaunstanislaus/scylla,respu/scylla,capturePointer/scylla,koolhazz/seastar,raphaelsc/scylla,chunshengster/seastar,leejir/seastar,gwicke/scylla,acbellini/seastar,phonkee/scylla,phonkee/scylla,bowlofstew/seastar,printedheart/seastar,jonathanleang/seastar,bzero/seastar,slivne/seastar,syuu1228/seastar