* setup:
  git-gitlab-push: Require a '--force' option to force-push the topic
  git-gitlab-push: Document options on multiple lines in usage
  git-gitlab-push: Keep user fork 'master' up to date if possible
  git-gitlab-push: Print follow-up instructions and links for user
  Add 'git-gitlab-push' script to help users push to their GitLab fork
  Add 'setup-gitlab' script to configure GitLab access
  Add 'setup-upstream' script to help users configure preferred upstream
  git-gerrit-push: Fetch 'master' before checking refspecs
  git-gerrit-push: Avoid bash history expansion
  git-gerrit-push: Append topic to refspecs instead of overwriting
  git-gerrit-push: Refine topic name validation
  setup-hooks: Create .git hooks directory if necessary