Not reviewed.

        Fix the build for case-sensitive build systems.

        * API/JSBase.cpp:
        * API/JSObjectRef.cpp:
        * runtime/CommonIdentifiers.h:
        * runtime/Identifier.cpp:
        * runtime/InitializeThreading.cpp:
        * runtime/InternalFunction.h:
        * runtime/JSString.h:
        * runtime/Lookup.h:
        * runtime/PropertyNameArray.h:
        * runtime/PropertySlot.h:
        * runtime/StructureID.cpp:
        * runtime/StructureID.h:
        * runtime/UString.cpp:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@38138 268f45cc-cd09-0410-ab3c-d52691b4dbfc