Fix for ticket 179.
Fix for ticket 179.

Add new condition "HasWeapon" to test for presence of a weapon in the
named slot (mainhand or offhand).

Also fix some yesno parameter descriptions.

git-svn-id: b2bb544abab4b09d60f88077ac82407cb244c9c9@585 d5049fe3-3747-40f7-a4b5-f36d6801af5f

eXhausted/Ovale,eXhausted/Ovale,ultijlam/ovale,ultijlam/ovale,Xeltor/ovale,eXhausted/Ovale,ultijlam/ovale