[GSoC Patch 0/7] repo: add more path keys to git repo info

Series adds keys to git repo info.
Keys output paths of repository components:
* path.toplevel: repository tree.
* path.superproject-working-tree: superproject tree from submodules.
* path.objects: repository objects.
* path.hooks: repository hooks.
* path.index: repository index.
* path.grafts: repository grafts.
* path.git-prefix: prefix offset.

Keys support suffixes for format. Commits contain documentation and tests.

K Jayatheerth (7):
  repo: add path.toplevel with absolute and relative suffix formatting
  repo: add path.superproject-working-tree with absolute and relative
    suffixes
  repo: add path.objects with absolute and relative suffix formatting
  repo: add path.hooks with absolute and relative suffix formatting
  repo: add path.index with absolute and relative suffix formatting
  repo: add path.grafts with absolute and relative suffix formatting
  repo: add path.git-prefix path key validation

 Documentation/git-repo.adoc |  58 +++++++++++++
 builtin/repo.c              | 167 ++++++++++++++++++++++++++++++++++++
 t/t1900-repo-info.sh        | 108 +++++++++++++++++++++++
 3 files changed, 333 insertions(+)