Avoid spurious obliterate XFAIL with BDB.
Avoid spurious obliterate XFAIL with BDB.

* subversion/tests/cmdline/obliterate_tests.py
  (supports_obliterate): Check if client has obliterate support.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@944314 13f79535-47bb-0310-9956-ffa450edef68

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