Added the "category" of error (Error.name) in the error messages.
Added the "category" of error (Error.name) in the error messages.

git-svn-id: cc12c73f837f4c86aedaac3e81d294eae78e8bd7@5516 e969d3be-0e28-0410-a27f-dd5c76401a8b

darwin/firebug.lite