Possible new class of bugs

[Gervase Markham]

Kevin Benton wrote:
> I don't like that idea because it prevents me from using _xyz as a p/c name,
> something I do currently without any issues. 

Presumably you aren't using new charts, then? :-|

The only other fix we could do would be to special-case chart names and 
chop off the _ or . from the product name before creating them. But it 
does mean we can never use product names as hash keys anywhere else 
either, without doing a special case there too.

I really think we need to fix this, as Joel suggested, by enforcing that 
new product and component names cannot start with those two characters.

Gerv