[Companion] Official toolbar

[Brian Kennelly]

I have been able to run the official Yahoo! toolbar in Seamonkey. 

No changes to the 'ytoolbar.jar' file are necessary.  It only needs a 
modern theme added to display correctly in that theme; it works as-is in 
the  Classic theme.

I am writing a script to convert the XPI file so that it installs and 
displays correctly.  If I use the static icons from the Companion 
toolbar, I will not need to include any Yahoo! files, and, because it 
does not change the JAR file, I don't think it violates the Yahoo! terms. 

Is there any interest in this script?