ThrowTypeError should be a singleton object

Reviewed by Sam Weinig.

Source/JavaScriptCore: 

Per section 13.2.3 of the spec.
We could change setAccessorDescriptor to be able to share the global
GetterSetter object, rather than storing the accessor functions and
creating a new GetterSetter in defineProperty - but this won't be a
small change to PropertyDescriptors (and would probably mean making
GetterSetter objects immutable?) - so I'll leave that for another
patch.

* JavaScriptCore.exp:
    - don't export setAccessorDescriptor
* runtime/Arguments.cpp:
(JSC::Arguments::createStrictModeCallerIfNecessary):
(JSC::Arguments::createStrictModeCalleeIfNecessary):
    - call throwTypeErrorGetterSetter instead of createTypeErrorFunction
* runtime/Error.cpp:
* runtime/Error.h:
    - remove createTypeErrorFunction
* runtime/JSFunction.cpp:
* runtime/JSFunction.h:
    - remove unused createDescriptorForThrowingProperty
* runtime/JSGlobalObject.cpp:
(JSC::JSGlobalObject::reset):
(JSC::JSGlobalObject::visitChildren):
    - removed m_strictModeTypeErrorFunctionStructure.
* runtime/JSGlobalObject.h:
(JSC::JSGlobalObject::internalFunctionStructure):
    - removed m_strictModeTypeErrorFunctionStructure.
* runtime/PropertyDescriptor.cpp:
(JSC::PropertyDescriptor::setAccessorDescriptor):
    - changed to take a GetterSetter
* runtime/PropertyDescriptor.h:
    - changed to take a GetterSetter

LayoutTests: 

Per section 13.2.3 of the spec.

* fast/js/basic-strict-mode-expected.txt:
    - ThrowTypeError is a singleton, so cannot generate
      property-specific error messages.
* fast/js/script-tests/strict-throw-type-error.js: Added.
* fast/js/strict-throw-type-error-expected.txt: Added.
* fast/js/strict-throw-type-error.html: Added.
    - added test case that ThrowTypeError is a singleton



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@103958 268f45cc-cd09-0410-ab3c-d52691b4dbfc