[PATCH 0/2] minor show-index modernizations

While recommending show-index to somebody today, I noticed that it has a few ancient warts. This series turns it into a builtin and fixes the documentation. I suspect it could do with some more modernization and friendliness, like:

  - re-using the existing packfile.c code instead of re-implementing
    index-reading (though the packfile code would definitely need some
    refactoring to make this work)

  - it could probably handle arguments as files instead of requiring
    stdin redirection

I'll leave those for now, as they're not worth the effort to me at this point. But everybody who _doesn't_ use the command benefits from making it a builtin, so it seems like an easy win.

  [1/2]: make show-index a builtin
  [2/2]: show-index: update documentation for index v2

 Documentation/git-show-index.txt     | 22 ++++++++++++++++------
 Makefile                             |  2 +-
 builtin.h                            |  1 +
 show-index.c => builtin/show-index.c |  2 +-
 git.c                                |  1 +
 5 files changed, 20 insertions(+), 8 deletions(-)
 rename show-index.c => builtin/show-index.c (96%)

-Peff