Review Request: KProtocolManager patch to allow componenets to define their own default user-agent string

[Maksim Orlovich]

> I have also updated what information gets sent along with the default
> string to match the other major browsers. Before only the OS type was
> sent. With this patch OS type, platform, machine type and language
> information will be sent by default.

That's a bad idea. See bug 228831 as to why.