[RFC PATCH 0/2] submodule aware grep

This series contains 2 RFC patches that both implement a grep feature for
submodules.  The first patch is a self-contained script for contrib that should
work with most current git versions. The 2nd is basically the same
implementation but done as a proper git submodule command with some of the
helper code moved to git-sh-setup.sh

There are a couple of questions for this. Technically I'm making submodule 
grep-aware, should I be making grep submodule-aware instead? I haven't looked 
at the grep code yet but I imagine its harder.

Should I be putting the submodule_root* routines in git-sh-setup or should I be
looking at adding it to 'git rev parse' instead. I'm guessing eventually more 
commands might want to be able to get at the base superproject.

Chris Packham (2):
      contrib: add git-submodule-grep.sh
      submodule: add grep command