Follow-up to r17773.
Follow-up to r17773.

* subversion/tests/cmdline/davautocheck.sh: Don't rely on the existence of
  svn-config.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion