Use new mintty flag name
Use new mintty flag name

soenkehahn/stackage,spencerjanssen/stackage,michalkonecny/stackage,fpco/stackage,simonmichael/stackage,asr/stackage,mrkkrp/stackage,iand675/stackage,jonschoning/stackage,mstksg/stackage,peti/stackage,Daniel-Diaz/stackage,ethercrow/stackage,fimad/stackage,stackbuilders/stackage,athanclark/stackage,clinty/stackage,massysett/stackage,wereHamster/stackage,int-index/stackage