Add a test showing that 'git repack' throws away grafted-away parents
Add a test showing that 'git repack' throws away grafted-away parents

Signed-off-by: Björn Steinbrink <9596565723f8d20ad98ec08d3667b91c9b529ff1@gmx.de>
Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git