merkleMaker: Add isOverflowed attribute for checking even during 5 minute window
merkleMaker: Add isOverflowed attribute for checking even during 5 minute window

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