Description of problem:
nvidia-glx.i fails to start in FC6 for a variety of reasons.
1) because of a bash if/then syntax error
2) invalid "return $retval" which should be "exit ${retval}"
3) /dev/nvidia* devices missing

Also, this script should really be moved to system/nvidia-glx.i, since it only
updates /etc/X11/xorg.conf once when run.

Version-Release number of selected component (if applicable):
initng-ifiles-0.0.6-2.fc6

How reproducible:
Always

Steps to Reproduce:
1. install the official nvidia kmod from livna
2. ng-update add daemon/nvidia-glx
3. reboot
  
Actual results:
X won't start because of syntax errors in nvidia-glx.i and because of missing
/dev/nvidia* devices.

Expected results:
nvidia device files installed, and service starts.

Additional info:
Below is my working version for FC6:

#!/sbin/itype
# This is a i file, used by initng parsed by install_service

service daemon/nvidia-glx {
        need = system/bootmisc;
        env_file = /etc/sysconfig/nvidia-config-display;

        script start = {
                [ ! -f /dev/nvidiactl ] && cp -a /etc/udev/devices/nvidia* /dev
                echo "Checking for nvidia kernel module..."
                module="/lib/modules/`uname -r`/extra/nvidia/nvidia.ko"
                if [ -f $module ]; then
                        echo "Enabling nvidia-glx driver"
                        /usr/sbin/nvidia-config-display enable
                else
                        echo "`basename ${module}` module for `uname -r` kernel
not found"
                        echo "Disabling nvidia-glx driver"
                        /usr/sbin/nvidia-config-display disable
                fi
                retval=$?
                [ "$retval" == "0" ] && /bin/touch /var/lock/subsys/nvidia-glx
                exit ${retval}
        };

        script stop = {
                /usr/sbin/nvidia-config-display disable
                retval=$?
                [ "$retval" -eq "0" ] && /bin/rm -f /var/lock/subsys/nvidia-glx
                exit ${retval}
        }
}