The test refresh_read_only_attribute will fail when run as root on  *nix platforms. This is expected and correct behavior, so just skip this test when the tests are run as root.
The test refresh_read_only_attribute will fail when run as root on 
*nix platforms. This is expected and correct behavior, so just
skip this test when the tests are run as root.

* subversion/tests/cmdline/switch_tests.py
  (refresh_read_only_attribute): skip the test if platform is unix 
   and effective user is root.

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