Followup to r18602: Add an extra test to validate that svn blame ignores  whitespace when requested (-x -w option). 
Followup to r18602: Add an extra test to validate that svn blame ignores 
whitespace when requested (-x -w option). 

* subversion/tests/cmdline/blame_tests.py
  (blame_ignore_whitespace): New test
  (test_list): Run the new blame test.

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