- fix http://bugzilla.opendarwin.org/show_bug.cgi?id=6505
          retire APPLE_CHANGES from JavaScriptCore

        * JavaScriptCore.xcodeproj/project.pbxproj: Removed both
        APPLE_CHANGES and HAVE_CONFIG_H from all targets.

        * README: Removed. This had obsolete information in it
        and it wasn't clear what to replace it with.

        * kjs/collector.h: Removed an APPLE_CHANGES if around something
        that's not really platform-specific (although it does use a
        platform-specific API at the moment).
        * kjs/collector.cpp: Removed a mistaken comment.

        * kjs/grammar.y:
        * kjs/internal.cpp:
        * kjs/object.h:
        * kjs/operations.cpp:
        * kjs/operations.h:
        * kjs/ustring.h:
        Use __APPLE__ instead of APPLE_CHANGES for code that should be
        used only on Mac OS X.

        * kjs/interpreter.cpp: Removed APPLE_CHANGES ifdef around the include
        of the runtime.h header. Even though that header isn't needed at the
        moment on platforms other than Mac OS X, the conditional stuff should
        be in the header itself, not in this one client.

        * kjs/math_object.cpp: (MathFuncImp::callAsFunction): Removed some
        code inside APPLE_CHANGES. I'm pretty sure this code isn't needed on
        any platform where pow is implemented corrrectly according to the IEEE
        standard. If it is needed on some, we can add it back with an appropriate
        #if for the platforms where it is needed.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@12028 268f45cc-cd09-0410-ab3c-d52691b4dbfc