Add regression test for issue #2920: svn diff -x--ignore-eol-style doesn't  ignore eol on empty lines.
Add regression test for issue #2920: svn diff -x--ignore-eol-style doesn't 
ignore eol on empty lines.

* subversion/tests/cmdline/diff_tests.py
  (global): bump the copyright year
  (diff_ignore_eolstyle_empty_lines): new test
  (test_list): run the new test, mark as XFail for now.

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