Factor out the code that creates a patch file.
Factor out the code that creates a patch file.

* subversion/tests/libsvn_diff/parse-diff-test.c
  (test_parse_unidiff,
   test_parse_git_diff,
   test_parse_property_diff,
   test_parse_property_and_text_diff): Move out the code that creates a
     patch file into ..
  (create_patch_file): .. Here.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@956330 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion