Bug#541971: xboard: displays kings for variant pieces

[h.g. muller]

Well, as I said, there exist no standards for this. People even quarrel about
the names of these pieces; the Archbishop is also known as Cardinal, and
the Chancellor is known as Marshall. The crossed sword symbol is used
by Reinhard Scharnagel's SMIRF engine, and many Capablanca players
are emotionally attached to it. OTOH Gothic-Chess fans like to have
everything exactly their way.

Personally I abhor "cut and paste" piece symbols; we don't symbolize
a Queen by a Bishop on top of a Rook.

So the solution I have chosen was meant as a compromise. By using
flattened mitre in some sizes and crossed swords in the other for A
people can just pick a slightly different size if they strongly prefer one
representation over the other. The representation of the chancellor is
decided by selecting the variant (Gothic vs Capablanca). These variants
only differ in initial setup, so if people really care about the C 
representation
they can play Capablanca as Gothic by starting from a setup position
(in the -loadPositionFile).

What you say is very easy to do, but it would anger about half the
10x8 community. Although the chosen compromise seems a bit
illogical, I think it actually provides more flexibility, and will contribute
to the success of XBoard as a standard interface in the 10x8 community.

H.G. Muller