[PATCH 0/2 v4] worktree: for_each_worktree and list

This patch series adds a for_each_worktree function and then uses it to implement the `git worktree list` command.

Differences from [v3](http://www.mail-archive.com/git@vger.kernel.org/msg75599.html)
  - create the for_each_worktree function
  - uses the function in the list
  - a bare repo is NOT included in the iterated worktrees

Michael Rappazzo (2):
  worktree: add 'for_each_worktree' function
  worktree: add 'list' command

 Documentation/git-worktree.txt |  11 +++-
 builtin/worktree.c             | 139 +++++++++++++++++++++++++++++++++++++++++
 t/t2027-worktree-list.sh       |  51 +++++++++++++++
 3 files changed, 200 insertions(+), 1 deletion(-)
 create mode 100755 t/t2027-worktree-list.sh