rebar_file_utils: simplify commands on Windows
rebar_file_utils: simplify commands on Windows

cloudant/couchdb-rebar,choptastic/rebar,thomasbhatia/rebar,beni55/rebar-1,evnix/rebar,shkumagai/rebar,K2InformaticsGmbH/rebar,platinumthinker/rebar,jbalint/rebar3,wcy123/rebar,matwey/rebar,apache/couchdb-rebar,evnix/rebar,heroku/rebar,cloudant/couchdb-rebar,K2InformaticsGmbH/rebar,norton/rebar,dcarastan/rebar,blt/rebar3,rebar/rebar,GabrielNicolasAvellaneda/rebar,cloudant/couchdb-rebar,K2InformaticsGmbH/rebar,csyangchen/rebar,fishcakez/rebar3,K2InformaticsGmbH/rebar,matwey/rebar,basho/rebar,lrascao/rebar,rebar/rebar,oubiwann/rebar,apache/couchdb-rebar,norton/rebar,shkumagai/rebar,oubiwann/rebar,jacktang/rebar,paulo-ferraz-oliveira/rebar,lpgauth/rebar,jbalint/rebar3,zugolosian/rebar3,fabiankrol/rebar3,scatterbrain/rebar,bsmr-erlang/rebar,syl20bnr/rebar,processone/rebar3,SiDen/rebar,SiDen/rebar,blt/rebar3,saleyn/rebar3,lpgauth/rebar,syl20bnr/rebar,tsloughter/rebar3,thomasbhatia/rebar,evnix/rebar,djnym/rebar3,linearregression/rebar3,macintux/rebar,ferd/rebar3,project-fifo/rebar3,choptastic/rebar,K2InformaticsGmbH/rebar,apache/couchdb-rebar,RubberCthulhu/rebar,rebar/rebar3,rebar/rebar,GabrielNicolasAvellaneda/rebar,basho/rebar,choptastic/rebar,surik/rebar3,deadok22/rebar,CMoH/rebar,platinumthinker/rebar,bsmr-erlang/rebar,lrascao/rebar,CMoH/rebar,oubiwann/rebar,scatterbrain/rebar,macintux/rebar,heroku/rebar,project-fifo/rebar3,fauxsoup/rebar3,fauxsoup/rebar3,surik/rebar3,sile/rebar3,RubberCthulhu/rebar,norton/rebar3,processone/rebar3,matwey/rebar,benoitc/rebar3,beni55/rebar,bsmr-erlang/rebar,dcarastan/rebar,lrascao/rebar,macintux/rebar,norton/rebar,CMoH/rebar,walrusVision/rebar3,paulo-ferraz-oliveira/rebar,csyangchen/rebar,sile/rebar3,syl20bnr/rebar,jacktang/rebar,kellymclaughlin/rebar3,deadok22/rebar,zugolosian/rebar3,erlang/rebar3,beni55/rebar,lpgauth/rebar,matwey/rebar,lrascao/rebar3,beni55/rebar-1,SiDen/rebar,lrascao/rebar,paulo-ferraz-oliveira/rebar,norton/rebar,dcarastan/rebar,beni55/rebar,benoitc/rebar3,walrusVision/rebar3,thomasbhatia/rebar,shkumagai/rebar,lrascao/rebar,linearregression/rebar3,platinumthinker/rebar,vladdu/rebar3,fabiankrol/rebar3,bsmr-erlang/rebar,rebar/rebar3,csyangchen/rebar,wcy123/rebar,jacktang/rebar,GabrielNicolasAvellaneda/rebar,matwey/rebar,scatterbrain/rebar