Starting up Enhydra 5.1.beta8 - enTray.txt file not found

Hello!

When Enhydra 5.1beta8 starts up it tries to clear the text file enTray.txt - 
which is only usefull under Windows. With Linux/Unix you can a ugly exception 
every time you startup Enhydra.

I submitted a patch to the ObjectWeb SourcrForge so that this is only done on 
Windows, no longer on Unix/Linux.

If someone wants the changed Java class file, please send a personal email to 
me.