Extension to the '.' notation to allow multiple keywords

[Morgenes]

I've extended the '.' notation for referring to things to allow you to combine multiple keywords.  If you want to be more specific, you can refer to someone by combining multiple keywords and separating them with a '.'.

Examples:

   > look brown.candle
   #Looks at the brown candle.

   > keyword blue.cotton
   # Show all things in the vicinity that have the keywords 'blue' and 'cotton'

   > kill muscular.man
   # Kills the muscular man

   > put all.tallow.candle 2.large.bag
   # Puts all of the tallow candles into the second large bag.

   > emote flips ~blue.wrap behind him.
   # Performs an emote showing me flip my 'blue wrap' behind me.

Discussion thread is at http://www.zalanthas.org/gdb/index.php/topic,34853.0.html