add back initial appveyor file
add back initial appveyor file

ebfe/coreutils,wimh/coreutils,Arcterus/coreutils,tempbottle/coreutils,kwantam/coreutils,uutils/coreutils,ebfe/coreutils,kevgeniy/coreutils,dbrgn/coreutils,jbcrail/coreutils,uutils/coreutils,tempbottle/coreutils,dbrgn/coreutils,keunwoo/coreutils,Arcterus/coreutils,keunwoo/coreutils,uutils/coreutils,jbcrail/coreutils,kwantam/coreutils,Heather/coreutils,kevgeniy/coreutils,wimh/coreutils,Heather/coreutils,dbrgn/coreutils