[BRLTTY] Improving the speech support of brltty

[Lars Bjørndal]

[Dave]

> Is it okay for the speech functions to be bound to keyboard key combinations 
> rather than to braille display key combinations? This isn't an implementation 
> detail. I'm asking, rather, because I'd like to know where to define the 
> default bindings.

At least I'd like to have speech support available while not carrying
a braille display, and want to run a live usb system for instance.

(Maybe that's possible already?)

Lars