Fix copy_tests.py on Windows where cleanup of the test working copy fails.
Fix copy_tests.py on Windows where cleanup of the test working copy fails.

Patch by: Daniel Shahaf <d.s{_AT_}daniel.shahaf.co.il> 

* subversion/tests/cmdline/copy_tests.py
  (replaced_local_source_for_incoming_copy): replace shutil.rmtree with the 
   more effective safe_rmtree.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@869633 13f79535-47bb-0310-9956-ffa450edef68

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