shared_ptr: Add helpers for hashing shared_ptr<> by value
shared_ptr: Add helpers for hashing shared_ptr<> by value

capturePointer/scylla,guiquanz/scylla,rluta/scylla,bowlofstew/scylla,senseb/scylla,eklitzke/scylla,bowlofstew/scylla,acbellini/scylla,justintung/scylla,tempbottle/scylla,linearregression/scylla,rentongzhang/scylla,rluta/scylla,wildinto/scylla,aruanruan/scylla,gwicke/scylla,shaunstanislaus/scylla,senseb/scylla,raphaelsc/scylla,wildinto/scylla,kangkot/scylla,senseb/scylla,rentongzhang/scylla,scylladb/scylla,kjniemi/scylla,gwicke/scylla,acbellini/scylla,scylladb/scylla,dwdm/scylla,asias/scylla,shaunstanislaus/scylla,eklitzke/scylla,gwicke/scylla,aruanruan/scylla,justintung/scylla,duarten/scylla,acbellini/scylla,kangkot/scylla,duarten/scylla,duarten/scylla,scylladb/scylla,raphaelsc/scylla,respu/scylla,scylladb/scylla,glommer/scylla,linearregression/scylla,stamhe/scylla,eklitzke/scylla,guiquanz/scylla,rluta/scylla,wildinto/scylla,kjniemi/scylla,capturePointer/scylla,kangkot/scylla,dwdm/scylla,tempbottle/scylla,kjniemi/scylla,dwdm/scylla,linearregression/scylla,phonkee/scylla,rentongzhang/scylla,phonkee/scylla,guiquanz/scylla,victorbriz/scylla,asias/scylla,tempbottle/scylla,glommer/scylla,shaunstanislaus/scylla,bowlofstew/scylla,glommer/scylla,capturePointer/scylla,stamhe/scylla,raphaelsc/scylla,avikivity/scylla,aruanruan/scylla,stamhe/scylla,justintung/scylla,respu/scylla,phonkee/scylla,respu/scylla,victorbriz/scylla,asias/scylla,avikivity/scylla,victorbriz/scylla,avikivity/scylla