On the 'move-tracking-2' branch: Bring back the 'put' command.

* subversion/svnmover/svnmover.c
  (action_code_t, action, execute, usage, sub_main): Implement 'put'. (Not
    quite finished -- it doesn't preserve any properties the file may have had.)

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/move-tracking-2@1635798 13f79535-47bb-0310-9956-ffa450edef68