Git 1.9.3

The third maintenance release for Git 1.9; contains all the fixes
that are scheduled to appear in Git 2.0 since 1.9.2.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sync with 1.9.3
Git 2.0-rc3
Sync with 2.0-rc3

* master:
  Git 2.0-rc3
  Git 1.9.3