Minor change to "look"

Author:Dáin
Date:Sat Jan 8 00:23:18 2011
Id:2378
The "look (at)" command will now accept position modifiers (e.g., "inv." and
such).

Example, if you wield a sword (A) and there are two on the ground (B and C):

 > l sword
 shows A
 > l 3.sword
 shows C
 > l room.sword
 shows B
 > l 2.room.sword
 shows C
 > l inv.sword
 fails

Of course, this is exactly how most other commands work, but look has always
been different (and still is) as it not only handles object and character names
but also description keywords.

This change should at least make the difference slightly less annoying.

- Dáin