Karl is addressing issue #662 (revamping the notification system) as a
prerequisite to finishing issue #517 (module system).  This involves
eliminating one old notification system, and merging two others.  He
is using this file to avoid sudden cranial expansion (www.splode.com).


Takers of SVN_CL_NOTIFY(opt_state), svn_cl__make_notify_baton(pool):

   - svn_client_revert
   - svn_client_move 
   - svn_client_mkdir
   - svn_client_resolve
   - svn_client_add
   - svn_client_delete
   - svn_client_switch    (* Also takes before/after trace editors!)
   - svn_client_commit    (* Also takes before/after trace editors!)
   - svn_client_update    (* Also takes before/after trace editors!)
   - svn_client_copy      (* Also takes before/after trace editors!)

Things that take before and after trace editors:

   - svn_client_import  (in import-cmd.c)
   - svn_client_update
   - svn_client_switch
   - svn_client_commit
   - svn_client_copy

Takers of the new svn_cl__get_checkout_notifier 
                   (svn_wc_notify_func_t *notify_func_p,
                    void **notify_baton_p,
                    svn_boolean_t is_checkout,
                    svn_boolean_t suppress_final_line,
                    apr_pool_t *pool)

   - svn_client_checkout