Don't happily dump core upon svn status --ignore-externals, which we've been doing since probably r39213.
Don't happily dump core upon svn status --ignore-externals, which we've
been doing since probably r39213.

* subversion/libsvn_client/status.c
  (svn_client_status5): Flip mistaken boolean logic, we need to pass
   an external_func + baton to svn_wc_walk_status() when *not* ignoring
   externals.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion