Replace $vm.printValue() with $vm.value().

[Mark Lam]

When debugging with $vm, this change allows us to do this:

    $vm.print("myObj = " + myObj + "\n");

... instead of having to do this:

    $vm.print("myObj = ");
    $vm.printValue(myObj);
    $vm.print("\n");

[Mark Lam]

(In reply to comment #0)
> When debugging with $vm, this change allows us to do this:
> 
>     $vm.print("myObj = " + myObj + "\n");

I meant this change allows us to do this:

    $vm.print("myObj = " + $vm.value(myObj) + "\n");

[Mark Lam]

Created attachment 276772 [details]
proposed patch.

[Mark Lam]

Thanks for the review.  Landed in r199745: <http://trac.webkit.org/r199745>.