Fix [1831343]. Merfolk fighters were wielding stacks of spears because

they were being given in give_weapon(), as opposed to give_ammo(), where they should have been. One side effect of fixing this is that it is now possible for merfolk fighters to get both a trident and spears/javelins/throwing nets, or neither. Since getting neither is possible for orcs (i.e. orc fighters), and merfolk have the same aptitude for unarmed combat as orcs; and since gnolls can get both polearms (although not tridents) and throwing nets, I think both possibilities are okay for now.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3086 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on December 17, 2007
I46SXTM3KJ53E34L35Q6XPBCTA3DH7FWIOUREY4FZDAGZYBLTZYAC
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