Placeholder for ACR_GetSpellLevel, which should return a spell level for a particular spell ID.
Initial iteration of examine logic overrides. Move some functionality from Read Magic's impact script to the ACR Item Library. When an item is examined, the examiner can attempt to make a spellcraft check to identify potions and scrolls. As per SRD, scrolls can be tried once per day at DC20+SL, while potions can only be tried once, at DC25.

Note: Untested as of yet.