Add basic performance tests for git commands that can add data to the
object database. We cover:
* git add
* git stash
* git update-index (via git stash)
* git unpack-objects
* git commit --all
We cover all currently available fsync methods as well.
Signed-off-by: Neeraj Singh <neerajsi@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
