Follow-up to r28933, fix spurious changelist_tests.py 4 failure on Win32.
Follow-up to r28933, fix spurious changelist_tests.py 4 failure on Win32.

* subversion/tests/cmdline/changelist_tests.py
  (diff_with_changelists): svn diff output is one of the few places that
  Win32 uses '/' path separators, so expect that.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@869017 13f79535-47bb-0310-9956-ffa450edef68

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