Merge branch 'jc/grep-c'

Merge branch 'jc/grep-c'

* jc/grep-c:
  Split grep arguments in a way that does not requires to add /dev/null.
  Documentation/git-config.txt: AsciiDoc tweak to avoid leading dot
  Add test to check recent fix to "git add -u"
  Documentation/git-archive.txt: a couple of clarifications.
  Fix the rename detection limit checking
  diff --no-index: do not forget to run diff_setup_done()