For consistency with our other commands, remove svnmucc's -n alias
for --non-interactive.

* subversion/svnmucc/svnmucc.c
  (main): Add non_interactive_opt, remove -n.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1458792 13f79535-47bb-0310-9956-ffa450edef68
* subversion/svn/svn.c (sub_main): Call non-deprecated function.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1458795 13f79535-47bb-0310-9956-ffa450edef68