Visual D debugger tuple _expand_field

[BetaDamnit via Digitalmars-d-debugger]

_expand_field

takes up a huge amount of space for no reason. I think tuple scan 
be safely listed like arrays. We know they are tuples, no need to 
display _expand_field=, it just takes up a lot of space in the 
display for no reason, specially if there are several elements in 
the tuple.