This series improves git repo info and git repo structure.

For git repo info, it:

 * removes reliance on global repository state in this command path
 * supports category keys (e.g. layout, path)
 * adds rev-parse-like path keys and git-path-derived keys
 * adds --path-format=(absolute|relative) for path output control

For git repo structure, it adds deeper repository metrics inspired by git-sizer:

 * max inflated and max disk size per object type
 * max commit parent count
 * max tree entry count
 * max blob path length/depth
 * max annotated tag chain depth
 * aggregate keyvalue/nul totals and maxima

Tests and docs are updated accordingly.

Validation:

 * t/t1900-repo.sh
 * t/t1901-repo-structure.sh
 * full make -j4 test in Docker (failed 0)

Eslam reda ragheb (2):
  t1900,t1901: make repo tests hash-agnostic and wc-portable
  t1900,t1901: fix test portability issues

eslam-reda-div (1):
  repo: extend info paths and structure statistics

 Documentation/git-repo.adoc |  67 ++++-
 builtin/repo.c              | 525 ++++++++++++++++++++++++++++++++++--
 t/t1900-repo.sh             | 196 ++++++++++++++
 t/t1901-repo-structure.sh   | 250 ++++++++++++-----
 4 files changed, 948 insertions(+), 90 deletions(-)

base-commit: 7c02d39fc2ed2702223c7674f73150d9a7e61ba4
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-2208%2Feslam-reda-div%2Fgsoc-contribute-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-2208/eslam-reda-div/gsoc-contribute-v1
Pull-Request: https://github.com/git/git/pull/2208