Make pack.indexversion config option default to version 2
Git 1.6.0 (released Sun Aug 17 11:42:22 2008 -0700) defaults
to creating the much safer pack index version 2 format when
writing a pack to disk. Most clients trying to use Git will
be running a recent version of C Git alongside JGit so it is
reasonably safe to assume they have index version 2 reading
support, and are thus prepared to accept this change in the
default output format.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>