Add a '--no-newline' option to 'svnlook youngest', for consistency with
'svn youngest'. See issue #4299 'Remote version of "svnlook youngest"'.

* subversion/svnlook/svnlook.c
  (svnlook__no_newline): New constant.
  (options_table, svnlook_opt_state): Add a 'no-newline' option.
  (cmd_table): Add the 'no-newline' option to the 'youngest' command.
  (subcommand_youngest): Use it.
  (sub_main): Parse it.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1601362 13f79535-47bb-0310-9956-ffa450edef68