Try to fix a buildbot failure where python's builtin sqlite doesn't like our wc.db.
Try to fix a buildbot failure where python's builtin sqlite doesn't like our
wc.db.

* subversion/tests/cmdline/upgrade_tests.py
  (check_dav_cache): Don't try to read using old SQLite versions.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1097760 13f79535-47bb-0310-9956-ffa450edef68

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