stopwords language file german

To support GodFather in his excellent work, i've added an german stopwordlist to this post.

To enable german stopwords just copy these lines and replace it with words in :
"$stop_words =  array("

So it should look like this:
[code]    $stop_words =  array("aber", "als", "am", "an", "auch", "auf", "aus", "bei", "bin", "bis", "bist", "da", "dadurch", "daher", "darum", "das", "da