[rfa/doc] Add section on interrupts to remote protocol documentation

[Eli Zaretskii]

> Date: Fri, 18 Nov 2005 16:04:58 +1100
> From: Steven Johnson <sjohnson@sakuraindustries.com>
> 
> Otherwise, ^C is ignored as a special character.  What does "interrupt" 
> mean when you are not doing anything that can be interrupted?
> 
> If you are executing code, then you are in the "Dead space" between the 
> packet from GDB to the target to get the target to execute code, and the 
> reply from that packet.  I would have thought during this time, and this 
> time only ^C has any relevance?  If so then, it doesnt need to be 
> quoted, As you cant send a packet during this time.
> 
> I think it would be better to say that during this time, and this time 
> only is when ^C is relevant, and if received at any other time it is 
> processed like that character would be in the message stream.

Isn't this what Kevin's text says?  Here's the relevant fragment:

   Interrupts received while the program is stopped will be discarded.