
               Retro-themed wrapper around the pcalc calculator

This calculator is based on [https://github.com/vapier/pcalc - pcalc] with
a little tweak to narrow the space between the printed results to make the
output fit better on small terminals.

The visual theme somewhat mimicks a low-resolution CRT, which looks nice but
makes the digits 0 and 8 hard to distinguish for untrained eyes. This could be
fixed by using a different font. But I went for training my eyes. Sorry about
that.

Under the hood, rcalc uses Genode's regular terminal. Text can be copied
with the mouse while holding the shift key, and inserted via the middle
mouse button.
