Fix sweep promotions
authorH.G. Muller <h.g.muller@hccnet.nl>
Mon, 21 Oct 2013 20:38:53 +0000 (22:38 +0200)
committerH.G. Muller <h.g.muller@hccnet.nl>
Sun, 22 Dec 2013 22:32:08 +0000 (23:32 +0100)
commitf74dde3c39e1bf046f28972c752113f6311314d8
treeb41dd30c666e809e8604115c38f03dc8ed535722
parentf111a0eab598dd35c865985f85a93955f4fe5b3e
Fix sweep promotions

We should not be able to select shogi-style promotion partners of
other pieces, as there is no promotion suffix to indicate them.
backend.c