[PATCH] Use consistent conflict resolution option

Hi,

basically a follow-up patch for the previous patch (resolving
--accept=working for binary conflicts).
Separate patch since this change is technically not necessary to resolve
the test failure the previous fix resolved.

[[[
For consistent behavior use the same conflict resolution option for binary
text conflicts (note: no behavior change, since for binary conflicts
merged_text and working_text is semantically the same).

* subversion/svn/conflict-callbacks.c
  (resolve_conflict_by_accept_option): use svn_conflict_option_working_text
  for binary text conflicts in svn_cl__accept_working case
]]]

Regards,
Stefan