[imp] [fix] mswordview error output

[Lars Hecking]

> If you open lib/mimetypes.lib in your horde/imp/ directory and go to line 444
> you'll see
> 
> $pipe = popen("$default->path_to_mswordview $word_name 2>&1","r");
> 
> If you replace '2>' by '>' (remove the 2) the error messages will disappear!
 
 This is nonsense. You are left with ">&1" which redirects stdout to stdout -
 very useful.

 What you really want is to remove " 2>&1" completely.

 Yet, even this modification will not change the error described here

  http://marc.theaimsgroup.com/?l=imp&m=98537590924853&w=2