With new option --keep, or a configuration item clone.keeppack (we
need a better name, or start allowing dash,"clone.keep-pack"), the packed
data downloaded while cloning is saved as a pack in .git/objects/pack/
locally, with index generated for it with git-index-pack.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>