Merge branches 'jc/rev-list' and 'jc/pack-thin'

Merge branches 'jc/rev-list' and 'jc/pack-thin'

* jc/rev-list:
  rev-list --objects: use full pathname to help hashing.
  rev-list --objects-edge: remove duplicated edge commit output.
  rev-list --objects-edge

* jc/pack-thin:
  pack-objects: hash basename and direname a bit differently.
  pack-objects: allow "thin" packs to exceed depth limits
  pack-objects: use full pathname to help hashing with "thin" pack.
  pack-objects: thin pack micro-optimization.
  Use thin pack transfer in "git fetch".
  Add git-push --thin.
  send-pack --thin: use "thin pack" delta transfer.
  Thin pack - create packfile with missing delta base.

Conflicts:

	pack-objects.c (manual adjustment for thin pack needed)
	send-pack.c