[PATCH] : add link to test System.out and System.err output, if any

[Dominique Devienne <DD...@lgc.com>]

Patched against the head.

Each test case method can now have a link to its error and output 'streams',
just below the existing Properties link. I believe this is the last bit of
information from the XML file that was not viewable after running
<junitreport>.

Note that by default, <junitreport> uses the XSLs in the optional.jar, so
one needs to run it as follows for the external file XSLs to be used:

<junitreport todir="${logs}">
  <fileset dir="${logs}/tests" includes="*.xml" />
  <report format="frames" styledir="${ant.home}/etc" todir="${logs}" />
</junitreport>

Thanks, --DD