On the 'move-tracking-2' branch: Add an 'svnmover switch' subcommand.
* subversion/svnmover/svnmover.c (action_code_t, action_defn): Define a 'switch' subcommand. (do_switch): Rename from 'do_update' and extend to support switching to a different branch. Error out on an attempt to switch to a branch with a different root element; the merge would have errored out on this case anyway. (execute): Adjust the 'update' command to use do_switch(), and implement the 'switch' command.