Reviewed by Sam Weinig.

        Next step in splitting JIT functionality out of the Interpreter class:
        Moved vptr storage from Interpreter to JSGlobalData, so it could be shared
        between Interpreter and JITStubs, and moved the *Trampoline JIT stubs
        into the JITStubs class. Also added a VPtrSet class to encapsulate vptr
        hacks during JSGlobalData initialization.
        
        SunSpider says 0.4% faster. Meh.

        * JavaScriptCore.exp:
        * JavaScriptCore.xcodeproj/project.pbxproj:
        * interpreter/Interpreter.cpp:
        (JSC::Interpreter::Interpreter):
        (JSC::Interpreter::tryCacheGetByID):
        (JSC::Interpreter::privateExecute):
        * interpreter/Interpreter.h:
        * jit/JIT.cpp:
        (JSC::JIT::privateCompileMainPass):
        (JSC::JIT::privateCompile):
        (JSC::JIT::privateCompileCTIMachineTrampolines):
        * jit/JIT.h:
        (JSC::JIT::compileCTIMachineTrampolines):
        * jit/JITCall.cpp:
        (JSC::JIT::compileOpCall):
        (JSC::JIT::compileOpCallSlowCase):
        * jit/JITPropertyAccess.cpp:
        (JSC::JIT::privateCompilePatchGetArrayLength):
        * jit/JITStubs.cpp:
        (JSC::JITStubs::JITStubs):
        (JSC::JITStubs::tryCacheGetByID):
        (JSC::JITStubs::cti_vm_dontLazyLinkCall):
        (JSC::JITStubs::cti_op_get_by_val):
        (JSC::JITStubs::cti_op_get_by_val_byte_array):
        (JSC::JITStubs::cti_op_put_by_val):
        (JSC::JITStubs::cti_op_put_by_val_array):
        (JSC::JITStubs::cti_op_put_by_val_byte_array):
        (JSC::JITStubs::cti_op_is_string):
        * jit/JITStubs.h:
        (JSC::JITStubs::ctiArrayLengthTrampoline):
        (JSC::JITStubs::ctiStringLengthTrampoline):
        (JSC::JITStubs::ctiVirtualCallPreLink):
        (JSC::JITStubs::ctiVirtualCallLink):
        (JSC::JITStubs::ctiVirtualCall):
        * runtime/ArrayPrototype.cpp:
        (JSC::arrayProtoFuncPop):
        (JSC::arrayProtoFuncPush):
        * runtime/FunctionPrototype.cpp:
        (JSC::functionProtoFuncApply):
        * runtime/JSArray.h:
        (JSC::isJSArray):
        * runtime/JSByteArray.h:
        (JSC::asByteArray):
        (JSC::isJSByteArray):
        * runtime/JSCell.h:
        * runtime/JSFunction.h:
        * runtime/JSGlobalData.cpp:
        (JSC::VPtrSet::VPtrSet):
        (JSC::JSGlobalData::JSGlobalData):
        (JSC::JSGlobalData::create):
        (JSC::JSGlobalData::sharedInstance):
        * runtime/JSGlobalData.h:
        * runtime/JSString.h:
        (JSC::isJSString):
        * runtime/Operations.h:
        (JSC::jsLess):
        (JSC::jsLessEq):
        * wrec/WREC.cpp:
        (JSC::WREC::Generator::compileRegExp):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@41168 268f45cc-cd09-0410-ab3c-d52691b4dbfc