* subversion/libsvn_ra_svn/protocol
  Document the addition of 'send_copyfrom_args' and 'ignore_ancestry'
  parameters to the 'switch' command in r1449413.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1465094 13f79535-47bb-0310-9956-ffa450edef68