[PATCH 2/3] - Convert git-fsck-cache to argp

First in a series of patches to convert git commands to use "argp" for
argument processing as suggested by Jeff Garzik.  This patch converts
git-fsck-cache.  It improves the usage message, adds a --version option,
and allows options to be combined together with a single leading dash.

Signed-off-by: Sean Estabrooks <redacted>
Acked-by: "Jeff Garzik" <redacted>
Acked-by: "Junio C Hamano" <redacted>


 Documentation/git-fsck-cache.txt |    6 +++
 fsck-cache.c                     |   60
++++++++++++++++++++++-----------------
 2 files changed, 39 insertions(+), 27 deletions(-)