* rulesets/Py_Vector3D.cpp: Add print handler for Vector3D, which
doesn't seem to work yet.
* rulesets/basic/mind/panlingua/interlinguish.py: Add tell verb.
Modify regexs for simple sentences so they tolerate more
variation in the structure.
* rulesets/basic/mind/compass.py: New function to convert direction
vector into a compass direction string.
* rulesets/basic/mind/NPCMind.py: Add handler for tell verb, to
query knowledge from NPCs.