core: enable_lw_shared_from_this: Add missing move and copy constructors
core: enable_lw_shared_from_this: Add missing move and copy constructors

Signed-off-by: Avi Kivity <8f920f22884d6fea9df883843c4a8095a2e5ac6f@cloudius-systems.com>

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