https://bugs.webkit.org/show_bug.cgi?id=65404

Reviewed by Darin Adler.

This removes zombies, because they no longer work, are not tested, are
probably not needed, and are getting in the way of GC optimization
work.

* JavaScriptCore.xcodeproj/project.pbxproj:
* heap/Handle.h:
(JSC::HandleConverter::operator->):
(JSC::HandleConverter::operator*):
* heap/HandleHeap.cpp:
(JSC::HandleHeap::isValidWeakNode):
* heap/Heap.cpp:
(JSC::Heap::destroy):
(JSC::Heap::collect):
* heap/MarkedBlock.cpp:
(JSC::MarkedBlock::sweep):
* heap/MarkedBlock.h:
(JSC::MarkedBlock::clearMarks):
* interpreter/Register.h:
(JSC::Register::Register):
(JSC::Register::operator=):
* runtime/ArgList.h:
(JSC::MarkedArgumentBuffer::append):
(JSC::ArgList::ArgList):
* runtime/JSCell.cpp:
(JSC::isZombie):
* runtime/JSCell.h:
* runtime/JSGlobalData.cpp:
(JSC::JSGlobalData::JSGlobalData):
(JSC::JSGlobalData::clearBuiltinStructures):
* runtime/JSGlobalData.h:
* runtime/JSValue.h:
* runtime/JSValueInlineMethods.h:
(JSC::JSValue::JSValue):
* runtime/JSZombie.cpp: Removed.
* runtime/JSZombie.h: Removed.
* runtime/WriteBarrier.h:
(JSC::WriteBarrierBase::setEarlyValue):
(JSC::WriteBarrierBase::operator*):
(JSC::WriteBarrierBase::setWithoutWriteBarrier):
* wtf/Platform.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@92046 268f45cc-cd09-0410-ab3c-d52691b4dbfc