New winetricks 20080408: fixed dcom98

[Dan Kegel]

Another day, another winetricks release.  James Hawkins
noticed that installing native dcom98 breaks everything
now because it breaks three of the .exe's that wine starts
internally.   So I've updated winetricks to avoid overriding
rpcrt4, ole32, and oleaut32 for those three exe.  Once
again, dcom98 is your friend.

As always, the latest winetricks is online at
  http://kegel.com/wine/winetricks
and the change history is online at
  http://winezeug.googlecode.com/
- Dan