Fix bug on OSX involving /usr/bin/wc
Fix bug on OSX involving /usr/bin/wc

dzzh/git-subrepo,brijendratiwari/git-subrepo,ingydotnet/git-subrepo,brijendratiwari/git-subrepo,perlpunk/git-subrepo,dzzh/git-subrepo,perlpunk/git-subrepo,stsquared99/git-subrepo,stsquared99/git-subrepo,ingydotnet/git-subrepo