Merge branch 'maint'

* maint:
  xdiff: Match GNU diff behaviour when deciding hunk comment worthiness of lines
  Update cherry documentation.
  Refer to git-rev-parse:Specifying Revisions from git.txt
  git-fetch.sh printed protocol fix
  RPM package re-classification.
  Documentation: note about contrib/.
  git-svn: fix symlink-to-file changes when using command-line svn 1.4.0
  Set $HOME for selftests

diff --cc git-fetch.sh
Simple merge