[PATCH v3 0/9] http: end urls with slash

This patch series contains Gabriel's fix, as well as some related work I did in the area while looking through the code paths.

Changed from v2:
 - new patches (#2 and #9) that reworks http-fetch url slashing code, and test
   that this doesn't break anything.
 - patch #4: remove pointer check before running free(), as pointed out by
   Johnathan.

All other patches remain unchanged.

Contents: [1/9] t5550-http-fetch: add missing '&&' [2/9] t5550-http-fetch: add test for http-fetch [3/9] shift end_url_with_slash() from http.[ch] to url.[ch] [4/9] url: add str wrapper for end_url_with_slash() [5/9] http-backend: use end_url_with_slash() [6/9] http-push: Normalise directory names when pushing to some WebDAV servers [7/9] http-push: check path length before using it [8/9] http-push: add trailing slash at arg-parse time, instead of later on [9/9] http-fetch: rework url handling

 Makefile              |    2 +-
 http-backend.c        |    4 +---
 http-fetch.c          |   16 +++++-----------
 http-push.c           |   31 ++++++++++++++++---------------
 http.c                |    8 +-------
 http.h                |    2 +-
 t/t5550-http-fetch.sh |   16 ++++++++++++++--
 url.c                 |   14 ++++++++++++++
 url.h                 |    3 +++
 9 files changed, 56 insertions(+), 40 deletions(-)