Fix to bug #442 Mutl-word objects name doesn't work with drop and grammer fix in drop command

The exact parameter in the dbobj.search function call was incorrectly set to be the same as the quiet parameter, which caused the drop command to return an empty list if the exact item name was not used. Changing the value to exact=exact resolves this issue.

Additionally I fixed a grammar error in the drop command. "You don't carry" was changed to "You aren't carrying".