Merge branch 'doc-style/for-next' of git://repo.or.cz/git/trast

Merge branch 'doc-style/for-next' of git://repo.or.cz/git/trast

* 'doc-style/for-next' of git://repo.or.cz/git/trast:
  Documentation: merge: use MERGE_HEAD to refer to the remote branch
  Documentation: simplify How Merge Works
  Documentation: merge: add a section about fast-forward
  Documentation: emphasize when git merge terminates early
  Documentation: merge: add an overview
  Documentation: merge: move merge strategy list to end
  Documentation: suggest `reset --merge` in How Merge Works section
  Documentation: merge: move configuration section to end
  Documentation: emphasise 'git shortlog' in its synopsis
  Documentation: show-files is now called git-ls-files
  Documentation: tiny git config manual tweaks
  Documentation: git gc packs refs by default now

Conflicts:
	Documentation/config.txt