kernel.spec: reverse dependency logic for moving packages between kernel and kernel-modules-extra
    
    The logic to process mod-extra.list finds modules that depend on
    the modules in that list and includes those in kernel-module-extra
    as well.  This logic is broken, because it does not account for
    multi-layer dependency chains.  Specifically, if a module depends
    on another module, and only the second one depends on something in
    mod-extra.list, then only the second would get moved.  This leaves the
    first module in the kernel package, resulting in WARNING messages
    when the kernel rpm is installed:
    
    Preparing...                ########################################### [100%]
       1:kernel                 ########################################### [100%]
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/scsi/bnx2fc/bnx2fc.ko needs unknown symbol cnic_register_driver
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/scsi/bnx2fc/bnx2fc.ko needs unknown symbol cnic_unregister_driver
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/scsi/bnx2i/bnx2i.ko needs unknown symbol cnic_register_driver
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/scsi/bnx2i/bnx2i.ko needs unknown symbol cnic_unregister_driver
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/wusbcore/wusb-wa.ko needs unknown symbol wusbhc_reset_all
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/wusbcore/wusb-wa.ko needs unknown symbol wusbhc_handle_dn
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/wusbcore/wusb-wa.ko needs unknown symbol wusbd
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/wusbcore/wusb-wa.ko needs unknown symbol __wusb_dev_get_by_usb_dev
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/wusbcore/wusb-wa.ko needs unknown symbol wusbhc_giveback_urb
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/wusbcore/wusb-wa.ko needs unknown symbol wusb_dev_destroy
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/atm/xusbatm.ko needs unknown symbol usbatm_usb_disconnect
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/drivers/usb/atm/xusbatm.ko needs unknown symbol usbatm_usb_probe
    WARNING: /lib/modules/3.2.0-0.rc3.git1.2.fc14.x86_64/kernel/net/bridge/netfilter/ebtable_broute.ko needs unknown symbol br_should_route_hook
    
    This patch reverses that logic, so that anything in kernel with
    a dependency on something in mod-extra.list will cause the module
    in mod-extra.list to be treated as if it was _not_ in that list.
    This prevents the WARNING lines above.
    
    Signed-off-by: John W. Linville <linville@tuxdriver.com>