[PATCH 0/5] Consolidate path normalization functions

This series:

 - moves sanitary_path_copy around, which accounts for the bulk
   of the change;

 - updates longest_ancestor_length(), the core function of
   GIT_CEILING_DIRECTORIES;

 - adjust the test suite, uncovers a buglet in sanitary_path_copy(),
   and fixes it.

 - removes normalize_absolute_path() that duplicated functionality
   of sanitary_path_copy().

As a side effect, this fixes GIT_CEILING_DIRECTORIES on Windows, where this feature is currently broken.

Johannes Sixt (4):
  Make test-path-utils more robust against incorrect use
  Move sanitary_path_copy() to path.c and rename it to
    normalize_path_copy()
  Test and fix normalize_path_copy()
  Remove unused normalize_absolute_path()

René Scharfe (1):
  Fix t1504 on Windows

 cache.h                 |    2 +-
 path.c                  |  124 ++++++++++++++++++++++++++-------------
 setup.c                 |   88 +---------------------------
 t/t0060-path-utils.sh   |   33 +++++-----
 t/t1504-ceiling-dirs.sh |    6 +-
 test-path-utils.c       |   14 +++-
 6 files changed, 115 insertions(+), 152 deletions(-)