Reviewed by Geoff Garen.

        Initial patch by Mark Rowe.

        <rdar://problem/6519356>
        REGRESSION (r36006): "out of memory" alert running dromaeo on Windows

        Report the cost of the ArrayStorage vector more accurately/often.

        * runtime/JSArray.cpp:
        (JSC::JSArray::JSArray): Report the extra cost even for a filled array
        because JSString using the single character optimization and immediates
        wont increase the cost themselves. 
        (JSC::JSArray::putSlowCase): Update the cost when increasing the size of
        the array.
        (JSC::JSArray::increaseVectorLength): Ditto.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@40339 268f45cc-cd09-0410-ab3c-d52691b4dbfc