One more follow-up to r30548.
One more follow-up to r30548.

* configure.ac
  Don't require non-yes argument for --with-junit.

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