pull: fix --all to avoid limiting by patterns in current tree
pull: fix --all to avoid limiting by patterns in current tree

Regression introduced in:

  commit c23422388b975f13867457c86c78361dfdf8036e
  Author: Tomas Herman <tomas.herman@wikidi.com>
  Date:   Tue Apr 23 11:59:38 2013 +0200

      Added support for pulling only a subset of files.

Reported-by: Nikola Kovacs <c6f0d1d51966be2ceb7eda0d319f653c24bb8b78@gmail.com>

cnweibo/git-fat,jedbrown/git-fat,wikimedia/git-fat,jedbrown/git-fat,grahamgilbert/git-fat,wikimedia/git-fat,PersonifyInc/git-fat,PersonifyInc/git-fat,wikimedia/operations-debs-git-fat,cnweibo/git-fat,wikimedia/operations-debs-git-fat,grahamgilbert/git-fat