It's called "Hash Consing" not "Hash Consting"

It's called "Hash Consing" not "Hash Consting"
https://bugs.webkit.org/show_bug.cgi?id=112768

Rubber stamped by Mark Hahnenberg.

See http://en.wikipedia.org/wiki/Hash_consing

* heap/GCThreadSharedData.cpp:
(JSC::GCThreadSharedData::GCThreadSharedData):
(JSC::GCThreadSharedData::reset):
* heap/GCThreadSharedData.h:
(GCThreadSharedData):
* heap/SlotVisitor.cpp:
(JSC::SlotVisitor::SlotVisitor):
(JSC::SlotVisitor::setup):
(JSC::SlotVisitor::reset):
(JSC::JSString::tryHashConsLock):
(JSC::JSString::releaseHashConsLock):
(JSC::JSString::shouldTryHashCons):
(JSC::SlotVisitor::internalAppend):
* heap/SlotVisitor.h:
(SlotVisitor):
* runtime/JSGlobalData.cpp:
(JSC::JSGlobalData::JSGlobalData):
* runtime/JSGlobalData.h:
(JSGlobalData):
(JSC::JSGlobalData::haveEnoughNewStringsToHashCons):
(JSC::JSGlobalData::resetNewStringsSinceLastHashCons):
* runtime/JSString.h:
(JSC::JSString::finishCreation):
(JSString):
(JSC::JSString::isHashConsSingleton):
(JSC::JSString::clearHashConsSingleton):
(JSC::JSString::setHashConsSingleton):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@146383 268f45cc-cd09-0410-ab3c-d52691b4dbfc