Add BreakWhen method about morelinq HOT 3 CLOSED

I realise this is slightly (okay, maybe grossly) outside the intentions of this 
project but it just seems like such a nice simple method to add that could aid 
in the 
debugging of some rather annoying collection problems that would otherwise 
require 
some stress with the breakpoint condition dialog.

In hindsight, I'm not convinced anymore.  I don't know why I didn't consider 
it, but 
is it really worth going to this effort when all one needs to write is:

from x in myCollection
where MyBreakpointCondition(x)
Debugger.Break()

?

> outside the intentions of this project

I would say so too.

> I'm not convinced anymore.

In that case, closing for now.