On the 'move-tracking-2' branch: robustify the test code a bit.
On the 'move-tracking-2' branch: robustify the test code a bit.

* subversion/tests/cmdline/svnmover_tests.py
  (initial_content_A_iota): Use an error-checked function to run svnmover.
  (test_svnmover,
   xtest_svnmover): Catch bad exit codes.

git-svn-id: 486ec3464084f62cfe8608152673c827b947faa2@1669359 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion