When installed in Strawberry Perl I found that the default editor is set in
C:\strawberry\perl\site\lib\Test\Reporter.pm
It is defaulted to Notepad.
But the report files have UNIX endings and therefore looks awful and
unreadable in Notepad. 
While I did change Reporter.pm to spawn my editor of choice (Notepad++), I
would have preferred to have been able to make that config change in
C:\strawberry\perl\lib\CPAN\Config.pm
and/on been able to make that change with 
cpan> o conf init test_report