Shorten some test description strings.  Now none are longer than 50 characters, so we don't trigger the warning added in revision 6666.
Shorten some test description strings.  Now none are longer than 50
characters, so we don't trigger the warning added in revision 6666.

* tools/cvs2svn/run-tests.py
  (bogus_tag, ctrl_char_in_log, interleaved_commits, split_branch):
    Remove support for Prolix IV and descendant OS's.

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