Reviewed by Brady Eidson.
        
        Some cleanup in preparation for fixing <rdar://problem/4608404> 
        WebScriptObject's _executionContext lack of ownership policy causes 
        crashes (e.g., in Dashcode)
        
        I'm just trying to make heads or tails of this baffling code.
        
        Renamed "root" | "execContext" | "executionContext" => "rootObject", because
        that's the object's (admittedly vague) type name.
        
        * bindings/runtime.cpp: Removed createLanguageInstanceForValue
        because I'll give you a dollar if you can explain to me what it actually did.
        
        * bindings/runtime_root.cpp: Put everything in the KJS::Bindings namespace,
        removing the KJS::Bindings prefix from individual functions and datatypes.
        This matches the header and eliminates a lot of syntax cruft.
        
        * bindings/c/c_utility.cpp:
        (KJS::Bindings::convertValueToNPVariant): Replaced use of createLanguageInstanceForValue
        with call to _NPN_CreateScriptObject because that's what createLanguageInstanceForValue
        actually did (but don't ask me for that dollar now; that's cheating.)

        * bindings/objc/objc_utility.h:
        * bindings/objc/objc_utility.mm:
        (KJS::Bindings::convertValueToObjcValue): Removed. Its only purpose was 
        to call a single function for WebKit, which WebKit can do on its own.

        * kjs/interpreter.h: Removed rtti() because it was unused, and this class
        is scheduled for demolition anyway.
        
        * kjs/interpreter.cpp: Removed createLanguageInstanceForValue because it had
        nothing to do with the Interpreter, and nothing makes Chuck Norris more mad
        than a function whose sole purpose is to call another function of the same
        name. (Really, I asked him.)

WebCore:

        Reviewed by Brady Eidson.
        
        Some cleanup in preparation for fixing <rdar://problem/4608404> 
        WebScriptObject's _executionContext lack of ownership policy causes 
        crashes (e.g., in Dashcode)
        
        Layout tests pass.

        Renamed "root" | "execContext" | "executionContext" => rootObject, because
        that's the object's (admittedly vague) type name.
        
        * bindings/js/kjs_binding.cpp:
        * bindings/js/kjs_binding.h: Removed createLanguageInstanceForValue
        and createObjcInstanceForValue because their only purpose was to confuse you.
        
        * bindings/objc/DOMInternal.h: Moved declaration of createDOMWrapper here.
        createDOMWrapper is the new name for createObjcInstanceForValue.
        
        * bindings/objc/DOMInternal.mm: Renamed Interpreter::createObjcInstanceForValue
        to createDOMWrapper because creating DOM wrappers has nothing to do with the interpreter,
        and everything to do with the DOM. Renamed value to object because it is one.
        Removed newObj nil check that is unnecessary in ObjC.

        * bindings/objc/WebScriptObject.mm: Replaced call to createLanguageInstanceForValue
        with explicit code to do the same thing it would have done: (1) try to create 
        a DOM wrapper; (2) if the object is not a wrappable DOM object, create a 
        vanilla WebScriptObject for it instead.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@18461 268f45cc-cd09-0410-ab3c-d52691b4dbfc