Replace separate url1, revision1, url2, revision2 parameters with a single 'merge_source_t' structure named 'source', in a few more functions. A follow-up to r1211996.
Replace separate url1, revision1, url2, revision2 parameters with a single
'merge_source_t' structure named 'source', in a few more functions. A
follow-up to r1211996.

* subversion/libsvn_client/merge.c
  (do_merge): Document the element type of the 'merge_sources' array.
  (merge_cousins_and_supplement_mergeinfo, merge_locked,
   merge_reintegrate_locked): Replace separate parameters or variables with
    a single merge_source_t.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1212322 13f79535-47bb-0310-9956-ffa450edef68

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