Bug: 438261
Change-Id: Idd6839465ea36d072b1c4393f5abd2f39da02b62
usage_show=display one commit
usage_showRefNamesMatchingCommits=Show ref names matching commits
usage_showPatch=display patch
-usage_showRefNamesMatchingCommits=Show ref names matching commits
usage_showNotes=Add this ref to the list of note branches from which notes are displayed
usage_showTimeInMilliseconds=Show mtime in milliseconds
usage_squash=Squash commits as if a real merge happened, but do not make a commit or move the HEAD.