Tweak js console javascript, with many added notes
add 'categories I know about so far' to nsIScriptError.idl, as some attempt at documentation.
git-svn-id: svn://10.0.0.236/trunk@64762 18797224-902f-48f8-a5cc-f745e15eee43
Make getMessageArray return an empty array (rather than null) when there are no mmessages, and change console.js to expect this (but check against null anyway.)
git-svn-id: svn://10.0.0.236/trunk@64302 18797224-902f-48f8-a5cc-f745e15eee43