Reviewed by Cameron Zwarich and Geoffrey Garen.

        Fix for https://bugs.webkit.org/show_bug.cgi?id=21989
        Merge PropertyMap and StructureID

        - Move PropertyMap code into StructureID in preparation for lazily
          creating the map on gets.
        - Make remove with transition explicit by adding removePropertyTransition.
        - Make the put/remove without transition explicit.
        - Make cache invalidation part of put/remove without transition.

        1% speedup on SunSpider; 0.5% speedup on v8 suite.

        * GNUmakefile.am:
        * JavaScriptCore.exp:
        * JavaScriptCore.pri:
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * JavaScriptCoreSources.bkl:
        * kjs/AllInOneFile.cpp:
        * kjs/identifier.h:
        * runtime/JSObject.cpp:
        (JSC::JSObject::removeDirect):
        * runtime/JSObject.h:
        (JSC::JSObject::putDirect):
        * runtime/PropertyMap.cpp: Removed.
        * runtime/PropertyMap.h: Removed.
        * runtime/PropertyMapHashTable.h: Copied from runtime/PropertyMap.h.
        * runtime/StructureID.cpp:
        (JSC::StructureID::dumpStatistics):
        (JSC::StructureID::StructureID):
        (JSC::StructureID::~StructureID):
        (JSC::StructureID::getEnumerablePropertyNames):
        (JSC::StructureID::addPropertyTransition):
        (JSC::StructureID::removePropertyTransition):
        (JSC::StructureID::toDictionaryTransition):
        (JSC::StructureID::changePrototypeTransition):
        (JSC::StructureID::getterSetterTransition):
        (JSC::StructureID::addPropertyWithoutTransition):
        (JSC::StructureID::removePropertyWithoutTransition):
        (JSC::PropertyMapStatisticsExitLogger::~PropertyMapStatisticsExitLogger):
        (JSC::StructureID::checkConsistency):
        (JSC::StructureID::copyPropertyTable):
        (JSC::StructureID::get):
        (JSC::StructureID::put):
        (JSC::StructureID::remove):
        (JSC::StructureID::insertIntoPropertyMapHashTable):
        (JSC::StructureID::expandPropertyMapHashTable):
        (JSC::StructureID::createPropertyMapHashTable):
        (JSC::StructureID::rehashPropertyMapHashTable):
        (JSC::comparePropertyMapEntryIndices):
        (JSC::StructureID::getEnumerablePropertyNamesInternal):
        * runtime/StructureID.h:
        (JSC::StructureID::propertyStorageSize):
        (JSC::StructureID::isEmpty):
        (JSC::StructureID::get):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@38016 268f45cc-cd09-0410-ab3c-d52691b4dbfc