Support submitting upstream via old BIP 22 draft getmemorypool
Support submitting upstream via old BIP 22 draft getmemorypool

This is mainly to reduce differences between master and loop branch

thrasher-/eloipool,ahmedbodi/SHA-Eloipool-MMCFE-,thrasher-/eloipool,cinnamoncoin/eloipool-1,imsaguy/eloipool,uingei/eloipool,thrasher-/eloipool,jameshilliard/4tar-eloipool,uingei/eloi,svasva/eloipool,pointgaming/point-gaming-btc,wizkid057/eloipool