Added verbose (-v) option.
Stewart Brodie authored
Detail:
  Usually, numeric statistics with a value of zero are suppressed from
    the output (excepting TX and RX frame counts).  With this option,
    those fields are displayed, and the DCI SWI base is shown for each
    DIB too.
Admin:
  Requires RISC_OSLib 4.93 or later (for exported stdbool.h header)
    (RiscOS/Sources/Lib/RISC_OSLib  tag: RISC_OSLib-4_93 or later)

Version 0.01. Tagged as 'showstat-0_01'
0f1702ab