Adding QtDesigner custom widget plugin for KConfigXT

[Kris Wong]

> And why can't we unify that bit? For example, the make builder, the
run 
> options, and the debugger will be affected by the environment. You
want
> to code the same stuff three times? Or think of it this way: as a
user,
> you want to configure the same stuff three times? 

> Wouldn't it be better to set up a base environment config, and then as
a
> user, set up a configuration that uses the project wide environment
> settings as a base, but change values for a certain few?

I have to agree with Adam and Matt here.  I know as a user I do not want
to have to configure the environment any more than 1 time (hell I don't
even want to configure it that one time, really ;).

Kris Wong