Fix npc:<entry[.. type of arguments

the code that handles npc: and player: didn't link a ScriptEntry, so
tags that need a ScriptEntry (such as <entry[name].value>) do not work
in that situation.
Specific situation for easy reproduction/testing:
- create spider minispider <player.location> save:myspider
- narrate npc:<entry[myspider].created_npc> "<npc.name>"
(Obviously it's not actually a narrate, but code that actually interacts
with the npc)