Fix part of issue 4533, use POSIX patch method of starting the search
at the offset of previous hunk.

* subversion/libsvn_client/patch.c
  (get_hunk_info): Add offset parameter.
  (apply_one_patch): Pass previous offset.

* subversion/tests/cmdline/patch_tests.py
  (patch_hunk_avoid_reorder): Remove XFAIL, split failing part into ...
  (patch_hunk_avoid_reorder2): .. this new XFAIL test.
  (test_list): Add new test.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1644695 13f79535-47bb-0310-9956-ffa450edef68