1f2286305d introduced a "Unit+!Ship" preferred class. However, Preferred
classes don't actually use MatchesClassList, and thus this resulted in
no preference whatsoever. This is fixed.
Further, Macemen & elephants have no particular preferred classes,
unlike all other land units which are either Unit+!Ship or Human (which
implies !Ship). This is fixed by setting them to !Ship, for consistency.
Reported by: snelius (and also Valirhant, I believe)
Trac Tickets: #5945
Differential Revision: https://code.wildfiregames.com/D3442
This was SVN commit r24751.
wraitii
b28e6fda42