ignore symbolic links during index-filter
ignore symbolic links during index-filter

symbolic links should not be handled by git-fat even if
their name match the filelist

PersonifyInc/git-fat,ajohnson23/git-fat,ciena-blueplanet/git-fat,lpsinger/git-fat,grahamgilbert/git-fat,ciena-blueplanet/git-fat,jedbrown/git-fat,jedbrown/git-fat,cyaninc/git-fat,PersonifyInc/git-fat,wikimedia/operations-debs-git-fat,wikimedia/git-fat,lpsinger/git-fat,grahamgilbert/git-fat,cnweibo/git-fat,wikimedia/operations-debs-git-fat,wikimedia/git-fat,ajohnson23/git-fat,cnweibo/git-fat,cyaninc/git-fat