Follow-up to r1149228: Add some comments describing the optimizations for issue #3966 'log_noop_revs is far too slow'.
Follow-up to r1149228: Add some comments describing the optimizations for
issue #3966 'log_noop_revs is far too slow'.

* subversion/libsvn_client/merge.c

  (log_noop_revs, remove_noop_subtree_ranges): Document the requirement that
   the svn_log_entry_receiver_t receiver must be invoked from oldest to
   youngest revision.

Suggested by: gstein


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1149626 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion