Update DirList demo to work on Windows and include file modification times
Update DirList demo to work on Windows and include file modification times

Thanks to Bulat Ziganshin for the patch.
I also updated it to use multiple columns with titles and to avoid the use
of unsafePerformIO by using the :

darcs-hash:20070705155824-adfee-400c1066086e08c5db1514b8ce868a3308408e9c.gz

thiagoarrais/gtk2hs,thiagoarrais/gtk2hs,thiagoarrais/gtk2hs