Switch out a call to svn_wc_get_switch_editor3() in favor of svn_wc_get_switch_editor4() and as a result, do the traversal info gathering on the caller side instead of in libsvn_wc.
Switch out a call to svn_wc_get_switch_editor3() in favor of
svn_wc_get_switch_editor4() and as a result, do the traversal info gathering
on the caller side instead of in libsvn_wc.

* subversion/libsvn_client/switch.c
  (external_func_baton, external_func): New.
  (svn_client__switch_internal): Use the updated API, setting up the baton
    and callback appropriately.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@879702 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion