for review: workaround for the large term problem in the debugger

[Fergus Henderson]

On 12-Jun-1998, Zoltan Somogyi <zs at cs.mu.OZ.AU> wrote:
> 
> runtime/mercury_trace_internal.c:
> 	Separate the functionality of the old 'p'" command into two parts.
> 	The new 'v' command lists the live variables, giving a number to each.
> 	The new 'p' command takes an argument. If this argument is a number,
> 	it prints the variable with that number in the list produced by 'v'.
> 	If this argument is '*', it prints all variables.

You need to update the debugger test cases.

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