Fix units of "value"
Fix units of "value"

Units of BTC/MkeyHr are meaningless. Change them to BTC/Mkey (expected
earnings per million keys generated).

kangaderoo/vanitygen,enlighter/vanitygen,bespike/vanitygen,clovermebitcoin/test,Stoner19/NEOS-vanitygen,inuitwallet/vanitygen,sobakasu/vanitygen,Cremator/vanitygen,colindean/vanitygen,isghe/vanitygen,fantomgs/vanitygen,WyseNynja/vanitygen,Instigo/vanitygen,dooglus/vanitygen,kangaderoo/vanitygen,bither/vanitygen,Gamecredits-Universe/vanitygen-gamecredits,samr7/vanitygen,Cremator/vanitygen,kangaderoo/vanitygen,shinohai/vanitygen,WyseNynja/vanitygen,sobakasu/vanitygen,enlighter/vanitygen,clovermebitcoin/test,dooglus/vanitygen,sobakasu/vanitygen