Provide extended handling of removable media

[GoogleCodeExporter]

This is perhaps something that would make more sense as another plugin, 
dependent on Gemstone, but thought I'd bring it up, as I think it may require a 
new dynamic menu type.

I'd like to be able to have a main menu entry for each removable media item 
currently inserted.  I would then be creating a submenu that contained a few 
custom entries.  Play Disc, Import to Library, etc.

I'm thinking it could be done actively by another process monitoring the 
sources, and sending calls to the menu system to add/remove the appropriate 
menu entries, but I thought it might end up being smoother if it used the 
already implemented dynamic menu system, like the current Gemstone Flows* menu 
item.  Certainly would be easier for the end user this way. 

I'll have to start by figuring out how to even detect this information from 
within Java, and then figure out what items to include for each particular 
media type.

Original issue reported on code.google.com by CraziFu...@gmail.com on 2 Jan 2013 at 3:16