[GSoC] [PATCH v5 0/3] submodule--helper: introduce subcommands for sh to C conversion

Only two changes since v4:
 - Add missing trailers and s.o.b in [1/3]
 - In [3/3] introduce a wrapper function called 'config_submodule_in_gitmodules'
   that sets the 'submodule.<name>.<var>' configuration, and before doing so,
   checks if it is okay to write to '.gitmodules', which was the original
   behaviour of the shell version.

Atharva Raykar (3):
  submodule--helper: refactor module_clone()
  submodule--helper: introduce add-clone subcommand
  submodule--helper: introduce add-config subcommand

 builtin/submodule--helper.c | 542 ++++++++++++++++++++++++++++--------
 git-submodule.sh            |  66 +----
 2 files changed, 431 insertions(+), 177 deletions(-)