Add ItemList(name id ...) that sets ``name'' to a list of item IDs.

This works in the same fashion as SpellList(name id ...) for assigning a
single name to a list of spell IDs.

git-svn-id: svn+ssh://svn.curseforge.net/wow/ovale/mainline/trunk@722 d5049fe3-3747-40f7-a4b5-f36d6801af5f
Add HasTrinket(id) condition to test whether a trinket is equipped.

git-svn-id: svn+ssh://svn.curseforge.net/wow/ovale/mainline/trunk@723 d5049fe3-3747-40f7-a4b5-f36d6801af5f